Reproducible Hibernate exception when creating a blog post

Hi,

when trying to create a blog post this exception comes up in the xwiki log:

2018-12-14 15:06:16,643 [http://127.0.0.1:8080/bin/edit/Blog/Test2?template=Blog.BlogPostTemplate&parent=Blog.WebHome&title=Test2&Blog.BlogPostClass_0_title=Test2local&form_token=8xGyfzc6mXRnmxLuckYtVA] INFO  .HibernateDataMigrationManager - Checking Hibernate mapping and updating schema if needed for wiki [<input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=-&#38;&#34;, varname] 
2018-12-14 15:06:16,833 [http://127.0.0.1:8080/bin/edit/Blog/Test2?template=Blog.BlogPostTemplate&parent=Blog.WebHome&title=Test2&Blog.BlogPostClass_0_title=Test2local&form_token=8xGyfzc6mXRnmxLuckYtVA] ERROR .HibernateDataMigrationManager - The empty database <input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=-&#38;&#34;, varname seems to be not writable, please check your configuration! 
com.xpn.xwiki.store.migration.DataMigrationException: Unable to update schema of wiki [<input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=-&#38;&#34;, varname]
	at com.xpn.xwiki.store.migration.hibernate.HibernateDataMigrationManager.updateSchema(HibernateDataMigrationManager.java:182)
	at com.xpn.xwiki.store.migration.hibernate.HibernateDataMigrationManager.initializeEmptyDB(HibernateDataMigrationManager.java:142)
	at com.xpn.xwiki.store.migration.AbstractDataMigrationManager.initNewDB(AbstractDataMigrationManager.java:445)
	at com.xpn.xwiki.store.migration.AbstractDataMigrationManager.initializeCurrentDatabase(AbstractDataMigrationManager.java:550)
	at com.xpn.xwiki.store.migration.AbstractDataMigrationManager.checkDatabase(AbstractDataMigrationManager.java:533)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.setDatabase(XWikiHibernateBaseStore.java:765)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.beginTransaction(XWikiHibernateBaseStore.java:942)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.beginTransaction(XWikiHibernateBaseStore.java:873)
	at com.xpn.xwiki.store.XWikiHibernateStore.loadXWikiDoc(XWikiHibernateStore.java:866)
	at com.xpn.xwiki.store.XWikiCacheStore.loadXWikiDoc(XWikiCacheStore.java:280)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1830)
	at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1871)
	at com.xpn.xwiki.api.XWiki.getDocument(XWiki.java:275)
	at com.xpn.xwiki.api.XWiki.getDocument(XWiki.java:260)
	at sun.reflect.GeneratedMethodAccessor227.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
	at org.apache.velocity.runtime.parser.node.ASTExpression.value(ASTExpression.java:71)
	at org.apache.velocity.runtime.parser.node.ASTSetDirective.render(ASTSetDirective.java:142)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:131)
	at org.xwiki.rendering.internal.macro.velocity.VelocityMacro.evaluateString(VelocityMacro.java:52)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.evaluateBlock(AbstractScriptMacro.java:286)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:182)
	at org.xwiki.rendering.macro.script.AbstractScriptMacro.execute(AbstractScriptMacro.java:58)
	at org.xwiki.rendering.internal.transformation.macro.MacroTransformation.transform(MacroTransformation.java:272)
	at org.xwiki.rendering.internal.transformation.DefaultRenderingContext.transformInContext(DefaultRenderingContext.java:183)
	at org.xwiki.panels.internal.PanelWikiUIExtension.lambda$execute$0(PanelWikiUIExtension.java:169)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at org.xwiki.panels.internal.PanelWikiUIExtension.execute(PanelWikiUIExtension.java:166)
	at sun.reflect.GeneratedMethodAccessor459.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:567)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:151)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:420)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:796)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:675)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:650)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:649)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:628)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:614)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:77)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2131)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2109)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:952)
	at sun.reflect.GeneratedMethodAccessor240.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:796)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:675)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:650)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:649)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:628)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:614)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:77)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2131)
	at com.xpn.xwiki.XWiki.parseTemplate(XWiki.java:2109)
	at com.xpn.xwiki.api.XWiki.parseTemplate(XWiki.java:952)
	at sun.reflect.GeneratedMethodAccessor240.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:395)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:384)
	at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:173)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:280)
	at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:369)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.directive.VelocimacroProxy.render(VelocimacroProxy.java:216)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:311)
	at org.apache.velocity.runtime.directive.RuntimeMacro.render(RuntimeMacro.java:230)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:207)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:87)
	at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:72)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:106)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:342)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluateInternal(DefaultVelocityEngine.java:259)
	at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:222)
	at com.xpn.xwiki.render.DefaultVelocityManager.evaluate(DefaultVelocityManager.java:361)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.evaluateContent(InternalTemplateManager.java:796)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:675)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.lambda$renderFromSkin$0(InternalTemplateManager.java:650)
	at com.xpn.xwiki.internal.security.authorization.DefaultAuthorExecutor.call(DefaultAuthorExecutor.java:85)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:649)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.renderFromSkin(InternalTemplateManager.java:628)
	at com.xpn.xwiki.internal.template.InternalTemplateManager.render(InternalTemplateManager.java:614)
	at com.xpn.xwiki.internal.template.DefaultTemplateManager.render(DefaultTemplateManager.java:77)
	at com.xpn.xwiki.XWiki.evaluateTemplate(XWiki.java:2131)
	at com.xpn.xwiki.web.Utils.parseTemplate(Utils.java:180)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:463)
	at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:210)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:112)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:134)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
	at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1580)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1537)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.hibernate.HibernateException: Failed updating schema while executing query [create table <input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=_&#38;&#34;, varname.activitystream_events (ase_eventid varchar(48) not null, ase_requestid varchar(48), ase_stream varchar(255), ase_date timestamp, ase_priority int4, ase_type varchar(255), ase_application varchar(255), ase_user varchar(255), ase_wiki varchar(255), ase_space varchar(255), ase_page varchar(255), ase_hidden bool, ase_url varchar(2000), ase_title varchar(2000), ase_body varchar(2000), ase_version varchar(30), ase_param1 varchar(2000), ase_param2 varchar(2000), ase_param3 varchar(2000), ase_param4 varchar(2000), ase_param5 varchar(2000), primary key (ase_eventid))]
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.updateSchema(XWikiHibernateBaseStore.java:652)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.updateSchema(XWikiHibernateBaseStore.java:393)
	at com.xpn.xwiki.store.migration.hibernate.HibernateDataMigrationManager.hibernateShemaUpdate(HibernateDataMigrationManager.java:198)
	at com.xpn.xwiki.store.migration.hibernate.HibernateDataMigrationManager.updateSchema(HibernateDataMigrationManager.java:179)
	... 193 common frames omitted
Caused by: org.postgresql.util.PSQLException: FEHLER: Syntaxfehler bei »<«
  Position: 14
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:555)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:403)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:331)
	at org.apache.commons.dbcp2.DelegatingStatement.executeUpdate(DelegatingStatement.java:234)
	at org.apache.commons.dbcp2.DelegatingStatement.executeUpdate(DelegatingStatement.java:234)
	at com.xpn.xwiki.store.XWikiHibernateBaseStore.updateSchema(XWikiHibernateBaseStore.java:648)
	... 196 common frames omitted
2018-12-14 15:06:16,836 [http://127.0.0.1:8080/bin/edit/Blog/Test2?template=Blog.BlogPostTemplate&parent=Blog.WebHome&title=Test2&Blog.BlogPostClass_0_title=Test2local&form_token=8xGyfzc6mXRnmxLuckYtVA] WARN  c.x.x.a.XWiki                  - Failed to access document <input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=-&#38;&#34;, varname:&#34;input&#34;} )' class='suggested' id='Blog.EnablePanelsConfigurationClass_0_blog' name='Blog.EnablePanelsConfigurationClass_0_blog' value='' size='1' type='text'/>: Error number 3202 in 3: Exception while reading document [<input onfocus='new ajaxSuggest(this, &#123;script:&#34;/bin/view/Main/?xpage=suggest&#38;classname=Blog.EnablePanelsConfigurationClass&#38;fieldname=blog&#38;firCol=doc.fullName&#38;secCol=-&#38;&#34;, varname:&#34;input&#34;} )' class='suggested' id='Blog.EnablePanelsConfigurationClass_0_blog' name='Blog.EnablePanelsConfigurationClass_0_blog' value='' size='1' type='text'/>] 

Is this an upgrade 8.3 -> 9.4 issue and does some one know how can I fix this ?

Ciao

Apparently the error is:

Caused by: org.postgresql.util.PSQLException: FEHLER: Syntaxfehler bei »<«

I’d say there’s some escape missing somewhere and the < symbol that you have somewhere seems to be causing the problem.

You should open a jira issue for the blog app at http://jira.xwiki.org/projects/BLOG/summary

Thanks

OK I filed a bug in Jira.