Hi Guillaume,
Your error message indicates that the error is caused by the XSLT processor, not by BaseX itself. Could you possibly provide us with a minimized version of your query that causes the error?
Thanks in advance, Christian
________________________________ Von: Guillaume Porte via BaseX-Talk basex-talk@mailman.uni-konstanz.de Gesendet: Freitag, 17. Oktober 2025 12:42 An: basex-talk@mailman.uni-konstanz.de basex-talk@mailman.uni-konstanz.de Betreff: [basex-talk] Unexpected behaviour
Hi,
Yesterday I tried to install from the beginnig a working basex environnement on another repertory, just to do some tests. BaseX has been installed form the zip.
After adding additionnal repos, this error occured on the new install with basexhttp on. After stopping it, I launched the older install to verify what was going wrong, and now the same error occurs on this one too.
I am not very familiar with java, do you know what could posssibly be wrong here ?
Regards
Guillaume
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Unexpected error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk@mailman.uni-konstanz.de Version: BaseX 10.7 Java: Debian, 17.0.16 OS: Linux, amd64 Stack Trace: java.lang.NullPointerException: Cannot invoke "java.util.Vector.size()" because "vars" is null at org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1558) at org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1606) at java.base/java.util.HashMap.forEach(HashMap.java:1421) at org.basex.query.func.xslt.XsltTransform.transform(XsltTransform.java:87) at org.basex.query.func.xslt.XsltTransform.item(XsltTransform.java:41) at org.basex.query.expr.ItemMap.item(ItemMap.java:36) at org.basex.query.expr.ParseExpr.value(ParseExpr.java:51) at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:92) at org.basex.query.expr.List.value(List.java:226) at org.basex.query.func.StaticFunc.invokeInternal(StaticFunc.java:167) at org.basex.query.func.XQFunction.invoke(XQFunction.java:33) at org.basex.query.func.FuncCall.value(FuncCall.java:54) at org.basex.query.expr.gflwor.Let$LetEval.next(Let.java:146) at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:92) at org.basex.query.expr.Try.value(Try.java:93) at org.basex.query.expr.TypeCheck.value(TypeCheck.java:167) at org.basex.query.expr.ParseExpr.item(ParseExpr.java:56) at org.basex.query.expr.ItemMap.item(ItemMap.java:36) at org.basex.query.expr.ParseExpr.value(ParseExpr.java:51) at org.basex.query.expr.ParseExpr.iter(ParseExpr.java:46) at org.basex.query.scope.MainModule.iter(MainModule.java:48) at org.basex.query.QueryContext.lambda$iter$4(QueryContext.java:357) at org.basex.query.QueryContext.run(QueryContext.java:766) at org.basex.query.QueryContext.iter(QueryContext.java:357) at org.basex.http.restxq.RestXqResponse.serialize(RestXqResponse.java:78) at org.basex.http.web.WebResponse.create(WebResponse.java:58) at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:72) at org.basex.http.BaseXServlet.service(BaseXServlet.java:69) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1450) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:554) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:516) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034) at java.base/java.lang.Thread.run(Thread.java:840)