On Tue, Jan 12, 2016 at 11:14 AM, Christoph Haas <email(a)christoph-haas.de>
wrote:
  Am 07.01.2016 um 21:08 schrieb Rodrigo Borges Pereira:
  I updated from 7.4RC1 to 7.4 (Debian packages,
Tomcat7, MySQL). When I
 click the navigation arrows in the Main wiki, they come up empty. If I
 create a new wiki, it works fine. 
 I have the same issue. Caches are cleared. The
application server log
 reads:
 2016-01-12 10:11:45,237
 [
http://localhost:8080/xwiki/wiki/it/get/XWiki/DocumentTree?outputSyntax=pla…
 ]
 ERROR o.x.v.i.DefaultVelocityEngine  - Exception in macro
 #addNestedChildDocuments called at 119:it:XWiki.DocumentTree[line 438,
 column 1]
 2016-01-12 10:11:45,237
 [
http://localhost:8080/xwiki/wiki/it/get/XWiki/DocumentTree?outputSyntax=pla…
 ]
 ERROR o.x.v.i.DefaultVelocityEngine  - Exception in macro
 #addChildDocuments called at 119:it:XWiki.DocumentTree[line 624, column 1]
 2016-01-12 10:11:45,237
 [
http://localhost:8080/xwiki/wiki/it/get/XWiki/DocumentTree?outputSyntax=pla…
 ]
 ERROR o.x.v.i.DefaultVelocityEngine  - Exception in macro
 #addDocumentChildren called at 119:it:XWiki.DocumentTree[line 1, column 1]
 2016-01-12 10:11:45,237
 [
http://localhost:8080/xwiki/wiki/it/get/XWiki/DocumentTree?outputSyntax=pla…
 ]
 ERROR o.x.v.i.DefaultVelocityEngine  - Exception in macro #getChildren
 called at 119:it:XWiki.DocumentTree[line 37, column 1]
 2016-01-12 10:11:45,237
 [
http://localhost:8080/xwiki/wiki/it/get/XWiki/DocumentTree?outputSyntax=pla…
 ]
 ERROR o.x.v.i.DefaultVelocityEngine  - Exception in macro
 #handleDocumentTreeRequest called at 119:it:XWiki.DocumentTree[line 3,
 column 1]
 
If you access these URLs directly you should be getting some long
stacktrace that has more details about the root problem. Can you copy the
stacktrace and put it on a pasting website.
Thanks,
Marius
  The links in the document tree work but you can't
expand a section. :(
 …Christoph
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