February 2024 - BaseX-Talk - mailman.uni-konstanz.de

BaseX 9.6: The Summer Edition
by Christian Grün 28 Nov '24

28 Nov '24

Dear all, We provide you with a new and fresh version of BaseX, our open source XML framework, database system and XQuery 3.1 processor: https://basex.org/ Apart from our main focus (query rewritings and optimizations), we have added the following enhancements: XQUERY: MODULES, FEATURES - Archive Module, archive:write: stream large archives to file - SQL Module: support for more SQL types - Full-Text Module, ft:thesaurus: perform Thesaurus queries - Fulltext, fuzzy search: specify Levenshtein limit - UNROLLLIMIT option: control limit for unrolling loops XQUERY: JAVA BINDINGS - Java objects of unknown type are wrapped into function items - results of constructor calls are returned as function items - the standard package "java.lang." has become optional - array arguments can be specified with the middle dot notation - conversion can be controlled with the WRAPJAVA option - better support for XQuery arrays and maps WEB APPLICATIONS - RESTXQ: Server-Timing HTTP headers are attached to the response For a more comprehensive list of added and updated features, look into our documentation (docs.basex.org) and check out the GitHub issues (github.com/BaseXdb/basex/issues) Have fun, Your BaseX Team

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recursively used variables
by Rob Stapper 12 Aug '24

12 Aug '24

Hi, The code[1] below and send as attachment generates a error message: “Static variable depends on itself: $Q{http://www.w3.org/2005/xquery-local-functions}test”. I use these variables to refer to my private functions in my modules so I can easyly refer to them in a inheritance situation. It’s not a big problem for me but I was wondering if the error-triggering is justified or that it should work. [1]=========================================== declare variable $local:test := local:test#1 ; declare %private function local:test( $i) { if ( $i > 0) then $local:test( $i - 1) } ; $local:test( 10) =========================================== Kind regards, Rob Stapper Sent from Mail for Windows 10 -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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xslt:transform-report result
by Andy Bunce 11 Mar '24

11 Mar '24

Hi, Using BaseX 9.7.1 and saxon9he-9.9.1.jar The documentation suggests the ?result from xslt:transform-report should be *a* document-node where possible [1] This seems not quite to be the case when there are processing instructions or comments at the top level. In these cases a sequence of document-nodes is returned. /Andy [1] https://docs.basex.org/wiki/XSLT_Module#xslt:transform-report let $xslt:=<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0"> <xsl:mode on-no-match="shallow-copy"/> </xsl:stylesheet> let $xml:=document{ <?something type="compact"?>, <foo/>} return xslt:transform-report($xml,$xslt) Returns map { "messages": (), "result": (<?something type="compact"?>, <foo/>) }

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Troubles with ft:mark
by Jack Steyn 07 Mar '24

07 Mar '24

Hi BaseXers, Consider the following query run on a database 'factbook' containing factbook.xml with full-text indexing: declare function local:search( $database as xs:string, $query as xs:string ) { let $country-search := ft:search($database, $query)/ancestor::country let $city-search := ft:search($database, $query)/ancestor::city/ancestor::country let $other-search := ft:search($database, $query)/parent::*[name() = ('ethnicgroups', 'languages')]/ancestor::country let $country-mark := $country-search[.//name[text() contains text { $query }]] => ft:mark() let $city-mark := $city-search[.//city[text() contains text { $query }]] => ft:mark() let $other-mark := $other-search[.//*[name() = ('ethnicgroups', 'languages')][text() contains text { $query }]] => ft:mark() return ( $country-mark, $city-mark, $other-mark ) }; local:search('factbook', 'German') The first result of this query is the entry for Austria. I would expect both of the instances of the word 'German' in that entry to be surrounded by <mark> tags. However only the first instance is. Some changes that produce the correct result for the Austria entry: - replacing $database with 'factbook' in the definition of $other-search, or - deleting either $country-mark or $city-mark in the sequence returned. If you make either of the above changes, but additionally change the predicate [text() contains text { $query }] to [ft:contains(text(), $query)], the incorrect result returns. Any idea what might be causing this? I'm running BaseX 10.7. Cheers, Jack

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Optimize database never returns, leaves database in "opened by another process" state
by Eliot Kimber 04 Mar '24

04 Mar '24

Using Basex 10.7 on Linux. I’m running a sequence of jobs to update and optimize a set of databases following loading a number of documents created dynamically (as opposed to being read from disk). I’m seeing a new behavior, which is that the optimization step never completes but also doesn’t show any error in the log. The database shows no items and is in the locked by another process state if I try to drop it. This behavior seems to be consistently repeatable with my current code base (I’m working on some code updates, so it’s possible I’ve introduced something that would cause this behavior but I haven’t changed the code that leads up to the failing optimize). The server has plenty of disk space, etc. Optimization code is: try { if (db:exists($database)) then ( util:logToConsole('dbadmin:optimizeDatabase', ``[Optimizing database `{$database}`]``), db:optimize($database, true(), $dbadmin:dbOptimizeOptions) ) else util:logToConsole('dbadmin:optimizeDatabase', ``[Database '`{$database}`' does not exist. Nothing to optimize.]``) } catch * { util:logToConsole( 'dbadmin:optimizeDatabase', ``[Exception optimizing database '`{$database}`': `{$err:code}` - `{$err:description}`]``, 'error') } And the optimization options are: declare variable $dbadmin:dbOptimizeOptions as map(*) := (: Turn on all the indexes :) map { 'attrindex' : true(), 'tokenindex' : true(), 'textindex' : true(), 'ftindex' : true() }; This code has been working fine for a long time and I’ve been running 10.7 for a least a couple of months, so I’m wondering: A) Would would cause this behavior? B) How can I diagnose it short of debugging the Java code (which I can do but it’s non-trivial for me to set up). Thanks, Eliot _____________________________________________ Eliot Kimber Sr Staff Content Engineer O: 512 554 9368 M: 512 554 9368 servicenow.com<https://www.servicenow.com> LinkedIn<https://www.linkedin.com/company/servicenow> | Twitter<https://twitter.com/servicenow> | YouTube<https://www.youtube.com/user/servicenowinc> | Facebook<https://www.facebook.com/servicenow>

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Re: [basex-talk] Item Separator
by Leo Studer 29 Feb '24

29 Feb '24

Dear Martin Thank you for investigating. > The "text1, , text2" I only see if oXygen shows the result as a sequence in its result viewer; I would suggest to ask the oXygen support why you get that result for that case, it seems like some quirk in their result viewer (it shows two xs:string items but for reasons I can't investigate serializes the two items for the result viewer as "text1, , text2"). > This is incredible news. I will get to Oxygen about that. Really troubling … Blessings, Leo

1 0

Odd "Access denied" messages in the log
by Eliot Kimber 28 Feb '24

28 Feb '24

I have an application (our Mirabel system) running on a server inside our firewall (so not visible to the open Internet). I’ve recently started seeing messages like this in the log: Access denied: ��. Access denied: PRI * HTTP/2.0 SM . Where the value reported can be quite varied, but is often unrenderable characters or other stuff. (In this case the characters are all \uFFFD). The log messages all report the same IP address. This server does not use named users, so there’s no authentication required to access it. The IP address is not one of my own servers, so I don’t think it’s something generated by my own code. Any idea what this might be? It’s started relatively recently, which makes me think it might be some sort of penetration test. Cheers, E. _____________________________________________ Eliot Kimber Sr Staff Content Engineer O: 512 554 9368 M: 512 554 9368 servicenow.com<https://www.servicenow.com> LinkedIn<https://www.linkedin.com/company/servicenow> | Twitter<https://twitter.com/servicenow> | YouTube<https://www.youtube.com/user/servicenowinc> | Facebook<https://www.facebook.com/servicenow>

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Item Separator
by Leo Studer 27 Feb '24

27 Feb '24

Hello I am serialising the following expressions on oxygen/saxonEE12.3 as text (item-separator=“”) and wonder why the differente outputs let $xml:=<xml><element>text1</element><element>text2</element></xml> return $xml/element/text() gives text1text2 And let $xml:=<xml><element>text1</element><element>text2</element></xml> return $xml/element/string() text1 text2 When I set the item-separator =“, “ then I get text1, text2 Or text1, , text2 Any explanations??? Thanks, Leo

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file:write, formatting, and maps in select attributes
by Graydon Saunders 24 Feb '24

24 Feb '24

Hello -- I'm trying to regularize the formatting of some XSLT files by loading them (via doc()) and writing them back out via file:write() I know about the *indent* and *indent-attributes* serialization parameters, and mostly they're doing what I want. What I'd like is to preserve a one-line-per-entry format for a map in a select attribute. For example, I'd like to keep <xsl:variable as="map(xs:integer,xs:string)" name="hexNum" select=" map { 1: '0', 2: '1', 3: '2', 4: '3', 5: '4', 6: '5', 7: '6', 8: '7', 9: '8', 10: '9', 11: 'a', 12: 'b', 13: 'c', 14: 'd', 15: 'e', 16: 'f' }" static="yes" /> instead of <xsl:variable as="map(xs:integer,xs:string)" name="hexNum" select=" map { 1: '0', 2: '1', 3: '2', 4: '3', 5: '4', 6: '5', 7: '6', 8: '7', 9: '8', 10: '9', 11: 'a', 12: 'b', 13: 'c', 14: 'd', 15: 'e', 16: 'f' }" static="yes"/> I don't think there's a way to do this with the serialization parameters, but is there a way to do this? Thanks! Graydon -- Graydon Saunders | graydonish(a)fastmail.com Þæs oferéode, ðisses swá mæg. -- Deor ("That passed, so may this.")

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basex failed to cast large numbers as xs:integer
by mx z 22 Feb '24

22 Feb '24

Hi, I found a bug in basex. Version: 1ce0618 (2024.02.22) Java: openjdk 17.0.9 2023-10-17 LTS OpenJDK Runtime Environment Corretto-17.0.9.8.1 (build 17.0.9+8-LTS) OpenJDK 64-Bit Server VM Corretto-17.0.9.8.1 (build 17.0.9+8-LTS, mixed mode, sharing) OS: Distributor ID: Ubuntu Description: Ubuntu 22.04.3 LTS Release: 22.04 Codename: jammy input.xml: <a xmlns:C="p"> <C:A id="1">1458820431</C:A>1438466813 </a> query.xq: //*[not(. castable as xs:integer)] Reproduce: java -cp basex-core/target/basex-11.0-SNAPSHOT.jar org.basex.BaseX -i input.xml query.xq It printed out <a xmlns:C="p"> <C:A id="1">1458820431</C:A>1438466813 </a> While basex should return empty, as both 1458820431 and 1438466813 are integers. Max Zhang

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Found problems with map:for-each
by Vincenzo Cestone 20 Feb '24

20 Feb '24

Hi all, with the basex 10.7 version (but even in 9.6 version I have the same issue) I found that the following code wont work as expected: (: It wont work :) let $files := map {"hello1.txt" : xs:base64Binary('SGVsbG8gd29ybGQ='), "hello2.txt" : xs:base64Binary('SGVsbG8gd29ybGQ=')} let $w := map:for-each($files, function($filename, $content) { file:write-binary($filename, $content, 0) }) return () that is, it will not write the two files hello1.txt and hello2.txt in the basex_home/bin folder. But, if you return $w instead: (: It works :) let $files := map {"hello1.txt" : xs:base64Binary('SGVsbG8gd29ybGQ='), "hello2.txt" : xs:base64Binary('SGVsbG8gd29ybGQ=')} let $w := map:for-each($files, function($filename, $content) { file:write-binary($filename, $content, 0) }) return $w With a similar implementation, with the classic FLWOR, the issue does not arise, even if I return the empty sequence: (: It works :) let $files := map {"hello1.txt" : xs:base64Binary('SGVsbG8gd29ybGQ='), "hello2.txt" : xs:base64Binary('SGVsbG8gd29ybGQ=')} let $w := for $filename in map:keys($files) return file:write-binary($filename, map:get($files, $filename), 0) return () that is it will write two files hello1.txt and hello2.txt in basex_home/bin folder. Note that the files in the examples above are for demonstration purposes, however in my code they are actually binary files. My java version is a Oracle JDK 17 This problem also occur to others? Thanks, Vincenzo

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Help with usage of Regex while deleting resources
by Deepak Dinakara 20 Feb '24

20 Feb '24

Hi, I wanted to know if it's possible to give a regex while deleting a resource. I have documents stored in a hierarchy of collections like {year}{month}/doc.xml. Eg: 202301/abc.xml, 202302/def.xml. If I want to delete a resource "abc.xml", Is it possible to issue commands like "*db:delete("db-name", '/*/abc.xml')*" ? Right now, I can do a XQuery with db:list and endsWith and get the complete path of "abc.xml". But regex would have been very handy. Similarly I also want to execute queries against a list of collections using regex. Something like "*for $document in collection('db-name/20230*')*" (First 9 months of 2023) Right now, I am doing something like "for $i in ('01', '02', '03', '04', ... '09') for $document in collection('test-collection/2023' || $i)" But if there are better ways, kindly let me know. Thank you, Deepak

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Slow full-text querying
by Murray, Gregory 18 Feb '24

18 Feb '24

Hello, I have a database with several thousand XML documents, although I have tens of thousands I’d like to add. Each XML document contains a book — both the bibliographic metadata such as title, author, etc. (each in its own element) and the complete OCR text of all pages of the book. Each page of text from each book is in a <page> element with a single text node containing all words from that page in the book, resulting in large blocks of text. I’ve added a full-text index and optimized it. I am finding that full-text searching is very slow. The query shown below consistently takes about 20 seconds to run, even though there are only about 7400 documents. Obviously that’s far too slow to use the query in a web application, where the user expects a quick response. My first thought is whether the query is actually using the full-text index. Is there a way for me to determine that? I’m also wondering if my query is crude or is missing something. I don’t need the text nodes containing the search words; I only need to know which documents contain the words. let $keywords := "apple" for $doc in collection("theocom") let score $score := $doc contains text {$keywords} order by $score descending where $score > 0 return concat($score, " ", base-uri($doc)) As you can see, I’m searching all text in the entirety of each book. Is there a way to rewrite such a query for faster performance? Also, I’m wondering if the structure of the XML documents is such that the documents themselves need to have smaller blocks of text. For example, if the OCR text were contained in <line> elements, each containing only a single line of text, as printed in the original physical book, would full-text searching be noticeably faster, since each text node is much smaller? Thanks, Greg

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XSLT version
by Martin Dowling 08 Feb '24

08 Feb '24

Hi I'm trying to run a query in BaseX (version 8.6.7) which calls an XSLT 2.0 stylesheet using xslt:transform(). I'm getting errors that clearly imply the system does not recognise XSLT 2.0 functions, and is expecting an XSLT 1.0 stylesheet. However, when I run xslt:version(), it returns "2.0" - which implies the system is set up for XSLT 2.0 stylesheets. Is there some other setting somewhere that might need to be updated, to enable the system to run an XSLT 2.0 transform? Thank you, Martin ________________________________ This email and its contents are confidential and may also be privileged and protected by copyright. If you are not the named recipient please notify the sender immediately, delete the email and all attachments completely from your system and do not use, print, copy, disclose or distribute any part of its contents. Bloomsbury Publishing Plc and its subsidiaries may monitor email traffic. Any views expressed in this email are those of the author, and do not necessarily represent those of Bloomsbury. This email does not conclude a binding agreement. Bloomsbury Publishing Plc 50 Bedford Square, London WC1B 3DP. Company registered in England and Wales company no. 1984336. Bloomsbury Publishing Inc. 1385 Broadway, Fifth floor, New York, 10018. Bloomsbury Publishing Pty Ltd, Level 4, 387 George St, Sydney, NSW 2000. Bloomsbury Publishing India Pvt. Ltd. DDA Complex, LSC , Building No.4, Second Floor, Pocket C-6&7, Vasant Kunj, New Delhi 110070. ABC-CLIO | Bloomsbury, ABC-CLIO is an imprint of Bloomsbury, 147 Castilian Drive, Santa Barbara, CA 93117.

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basexhttp out of memory where basexgui suceeds
by Jack Steyn 08 Feb '24

08 Feb '24

Hi, I have a database about 200 MB in size made up of approximately 150 000 documents of similar size and structure as children of the root node. When I run the following script in basexgui a significant amount of memory is consumed (over 1 GB if I'm reading the display correctly), but I do get a result: for $doc in db:get('docs') return $doc update { delete node .//*[local-name() = ('A', 'B', 'C', 'D')] } When I run it over basexhttp I get a java.lang.OutOfMemoryError: Java heap space. I have increased the memory available to the JVM to 4 GB but this has not affected the failure of the script. How can I resolve this? Is there some rewriting of the script that would help, or is it more specific to basexhttp? Many thanks, Jack

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Query regarding delete documents
by Deepak Dinakara 05 Feb '24

05 Feb '24

Hi, I wanted to understand more on how deleting documents impact the storage layout. I did go through https://docs.basex.org/wiki/Storage_Layout but didn't find all the required information. I observed that size of files like "txt.basex" and "atv.basex" doesn't shrink on deleting documents. Is that expected? PS: Thanks for the great product. Thank you, Deepak

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A question about (non standard) BaseX stopping
by Pierre-Yves Jallud 05 Feb '24

05 Feb '24

Hi all, after having configuring a BaseX hub (|cluster|farm|...?), I have a last problem (I hope 🤞😅). When I want to stop a BaseX instance with basexhttpstop (or basexhttp stop), I have different results, but none stop the instance. The context: * I'm using the following java version: *OpenJDK 64-Bit Server VM (Red_Hat-11.0.21.0.9-1.el7_9) (build 11.0.21+9-LTS, mixed mode, sharing)* * in the .bash_profile of the basexusr1 (and for each (system LINUX) BaseX user), I precise the BASEX_JVM variable (*export BASEX_JVM="-Dorg.basex.path=/basex-ferme/sites/basex1"*) to customize the webapp and data repository * */basex-ferme/sites/basex1/basex* is a symbolic link to the BaseX reference (every site has this symbolic link) located here: */basex-ferme/basex* (hum... this is also a symbolic link pointing to the last version of basex: */basex-ferme/basex-10.7*) * the ports are different for each instance and are (only) precised when I launch the BaseX process * I launch each process with this command (adapting basex1, basexusr1 and ports for each BaseX): *su - -s /bin/bash basexusr1 -c "/basex-ferme/sites/basex1/basex/bin/basexhttp -S -h11204 -p11205 -s11206" * * for each command below, the code returned is ($?) 0... but the process is still running 🤔 (as the web site). I only test the access of the DBA service (logging as admin) and I've got no database(at this time). The result of the stop commands: 1. > su - -s /bin/bash basexusr1 -c "/basex-ferme/sites/basex1/basex/bin/basexhttpstop -h11204 -p11205 -s11206" BaseX 10.7 [HTTP Server] [main] INFO org.eclipse.jetty.util.log - Logging initialized @1523ms to org.eclipse.jetty.util.log.Slf4jLog HTTP Server was stopped (port: 11204). Server was stopped (port: 11205). 2. > su - -s /bin/bash basexusr1-c "/basex-ferme/sites/basex1/basex/bin/basexhttp stop -h11204 -p11205 -s11206" BaseX 10.7 [HTTP Server] [main] INFO org.eclipse.jetty.util.log - Logging initialized @1441ms to org.eclipse.jetty.util.log.Slf4jLog HTTP Server was stopped (port: 11204). Server was stopped (port: 11205). 3. > su - -s /bin/bash basexusr1-c "/basex-ferme/sites/basex1/basex/bin/basexhttp stop -s11206" BaseX 10.7 [HTTP Server]: 11205). [main] INFO org.eclipse.jetty.util.log - Logging initialized @1819ms to org.eclipse.jetty.util.log.Slf4jLog HTTP Server was stopped (port: 8080). Server was stopped (port: 1984). 4. > su - -s /bin/bash basexusr1-c "/basex-ferme/sites/basex1/basex/bin/basexhttp stop -h11204 -s11206" BaseX 10.7 [HTTP Server] [main] INFO org.eclipse.jetty.util.log - Logging initialized @1366ms to org.eclipse.jetty.util.log.Slf4jLog HTTP Server was stopped (port: 11204). Server was stopped (port: 1984). 5. > su - -s /bin/bash basexusr1-c "/basex-ferme/sites/basex1/basex/bin/basexhttp stop -p11205 -s11206" BaseX 10.7 [HTTP Server] [main] INFO org.eclipse.jetty.util.log - Logging initialized @1006ms to org.eclipse.jetty.util.log.Slf4jLog HTTP Server was stopped (port: 8080). Server was stopped (port: 11205). ... and there is no track of the stop request in the log file (but there are the tracks of the admin access). The only solution I have found is to kill the process. That's my plan B, but I hope there is another cleaner solution 🤞😎 Has anyone a suggestion to resolve my problem?... and sorry for the complexity of the context 😓 Greetings Pierre-Yves ------------------------------------------------------------------------ *Pierre-Yves Jallud* /Pôle Humanité Numériques / Ingénieur en ingénierie logicielle/ ------------------------------------------------------------------------ IHRIM - UMR 5317 <http://ihrim.ens-lyon.fr> CNRS <https://www.cnrs.fr> ENS de Lyon <http://www.ens-lyon.fr> 15 Parvis René Descartes - BP7000 - 69342 Lyon CEDEX 07 +33 (0)4 37 37 63 83 - pierre-yves.jallud(a)ens-lyon.fr ------------------------------------------------------------------------

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hof:until qt4cg drops?
by Andy Bunce 03 Feb '24

03 Feb '24

I wanted to look up the hof:until[1] syntax in the wiki. It tells me that it has been replaced with fn:iterate-while. Well, I hope, when the dust settles, there is something similar to this in the spec, but it looks like it may not be iterate-while . Today a user of the current BaseX release(10.7) is going to struggle to find what hof:until does and wont find any fn:iterate-while . I think deprecating functions and moving forward is great. I do like to see what 4.0 might bring with the BaseX 11 betas but if I catch myself writing anything substantial I stop. The ground is unstable. I think the wiki should center on the functionality of the current release, with just teasers about the future. Christian, I think you hinted that the future may hold some documentation API built into the product, or did I imagine that? /Andy [1] https://docs.basex.org/wiki/Higher-Order_Functions_Module,

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How to configure org.basex.path
by Pierre-Yves Jallud 03 Feb '24

03 Feb '24

Hi all, I would like to precise the home directory of BaseX using org.basex.path (cf. https://docs.basex.org/wiki/Configuration#Home_Directory) Is it possible to configure this when I launch the basexhttp? For exemple, something like (befor launching basexhttp): export org.basex.path=/path/to/my/basex Or maybe: basexhttp -S org.basex.path=/path/to/my/basex ... or what else? Many thanks in advance to enlighten me 😇 Pierre-Yves PS: as you can see, I didn't use Java for a long time 😅 ------------------------------------------------------------------------ *Pierre-Yves Jallud* /Pôle Humanité Numériques / Ingénieur en ingénierie logicielle/ ------------------------------------------------------------------------ IHRIM - UMR 5317 <http://ihrim.ens-lyon.fr> CNRS <https://www.cnrs.fr> ENS de Lyon <http://www.ens-lyon.fr> 15 Parvis René Descartes - BP7000 - 69342 Lyon CEDEX 07 +33 (0)4 37 37 63 83 - pierre-yves.jallud(a)ens-lyon.fr ------------------------------------------------------------------------

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RESTXQ knocked out!
by Hans-Juergen Rennau 01 Feb '24

01 Feb '24

Dear BaseX people, suddenly RESTXQ does not work any more on my machine. (Here, "suddenly" means when using RESTXQ again after a pause of three months and having installed a new BaseX version in the meantime, 11.0 beta.) Any attempt to access a RESTXQ-defined URL produces a mysterious error message: HTTP ERROR 500 java.lang.NoClassDefFoundError: org/basex/build/text/TextOptions URI: /dbaSTATUS: 500MESSAGE: java.lang.NoClassDefFoundError: org/basex/build/text/TextOptionsSERVLET: RESTXQCAUSED BY: java.lang.NoClassDefFoundError: org/basex/build/text/TextOptionsCAUSED BY: java.lang.ClassNotFoundException: org.basex.build.text.TextOptionsCaused by:java.lang.NoClassDefFoundError: org/basex/build/text/TextOptions at org.basex.http.web.WebModule.parse(WebModule.java:63) at org.basex.http.web.WebModules.parse(WebModules.java:376) at org.basex.http.web.WebModules.parse(WebModules.java:367) at org.basex.http.web.WebModules.cache(WebModules.java:336) at org.basex.http.web.WebModules.find(WebModules.java:149) at org.basex.http.web.WebModules.restxq(WebModules.java:116) Emptying the lib/custom folder did not help. Neither did a reinstallation of BaseX (see PS). With kind regards -Hans-Jürgen PS: After observing the error, I tried to install the official release (10.7). To my amazement, the version did not change, it remained the 11.0 beta snapshot, even after restarting the machine. And, of course, the error remained. (After this, I felt knocked out myself. Is there anything that I understand?)

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