[datatables] Call to a member function getFullText() on null

[jaideraf]

Setup

• MW version: 1.39.8
• DB (MariaDB etc.): 10.3.39
• PHP version: 7.4.3
• SMW version: 5.0.0-alpha
• SRF version: 4.2.1

Issue

When changing from broadtable format to datatables format in the following ask query I get the error:

Steps to reproduce

{{#ask: [[Category:Obra]] [[Creation date::+]]
 |?Creation date#-F[d/m/Y]=Data de criação
 |?Page creator#
 |format=datatables
 |limit=100
 |offset=0
 |link=all
 |sort=Creation date
 |order=desc
 |intro=Últimos registros bibliográficos
 |headers=plain
 |searchlabel=… mais resultados
 |class=datatable compact cell-border
 |prefix=none
}} 

Stacktrace

[7cb75efc50dce10cc06db230] /w/index.php?title=Usu%C3%A1rio:Jaider.ferreira/teste&action=submit Error: Call to a member function getFullText() on null

Backtrace:

from /w/extensions/SemanticMediaWiki/src/Serializers/QueryResultSerializer.php(125)
#0 /w/extensions/SemanticMediaWiki/src/Serializers/QueryResultSerializer.php(216): SMW\Serializers\QueryResultSerializer::getSerialization()
#1 /w/extensions/SemanticMediaWiki/src/Serializers/QueryResultSerializer.php(58): SMW\Serializers\QueryResultSerializer::getSerializedQueryResult()
#2 /w/extensions/SemanticMediaWiki/src/Query/QueryResult.php(453): SMW\Serializers\QueryResultSerializer->serialize()
#3 /w/extensions/SemanticMediaWiki/src/Query/QueryResult.php(479): SMW\Query\QueryResult->serializeToArray()
#4 /w/extensions/SemanticResultFormats/formats/datatables/DataTables.php(554): SMW\Query\QueryResult->toArray()
#5 /w/extensions/SemanticResultFormats/formats/datatables/DataTables.php(440): SRF\DataTables->getResultText()
#6 /w/extensions/SemanticMediaWiki/src/Query/ResultPrinters/ResultPrinter.php(302): SRF\DataTables->buildResult()
#7 /w/extensions/SemanticMediaWiki/includes/query/SMW_QueryProcessor.php(344): SMW\Query\ResultPrinters\ResultPrinter->getResult()
#8 /w/extensions/SemanticMediaWiki/src/ParserFunctions/AskParserFunction.php(364): SMWQueryProcessor::getResultFromQuery()
#9 /w/extensions/SemanticMediaWiki/src/ParserFunctions/AskParserFunction.php(201): SMW\ParserFunctions\AskParserFunction->doFetchResultsFromFunctionParameters()
#10 /w/extensions/SemanticMediaWiki/src/ParserFunctionFactory.php(392): SMW\ParserFunctions\AskParserFunction->parse()
#11 /w/includes/parser/Parser.php(3439): SMW\ParserFunctionFactory->SMW\{closure}()
#12 /w/includes/parser/Parser.php(3124): Parser->callParserFunction()
#13 /w/includes/parser/PPFrame_Hash.php(275): Parser->braceSubstitution()
#14 /w/includes/parser/Parser.php(2953): PPFrame_Hash->expand()
#15 /w/includes/parser/Parser.php(1609): Parser->replaceVariables()
#16 /w/includes/parser/Parser.php(723): Parser->internalParse()
#17 /w/includes/content/WikitextContentHandler.php(301): Parser->parse()
#18 /w/includes/content/ContentHandler.php(1721): WikitextContentHandler->fillParserOutput()
#19 /w/includes/content/Renderer/ContentRenderer.php(47): ContentHandler->getParserOutput()
#20 /w/includes/Revision/RenderedRevision.php(266): MediaWiki\Content\Renderer\ContentRenderer->getParserOutput()
#21 /w/includes/Revision/RenderedRevision.php(237): MediaWiki\Revision\RenderedRevision->getSlotParserOutputUncached()
#22 /w/includes/Revision/RevisionRenderer.php(221): MediaWiki\Revision\RenderedRevision->getSlotParserOutput()
#23 /w/includes/Revision/RevisionRenderer.php(158): MediaWiki\Revision\RevisionRenderer->combineSlotOutput()
#24 [internal function]: MediaWiki\Revision\RevisionRenderer->MediaWiki\Revision\{closure}()
#25 /w/includes/Revision/RenderedRevision.php(199): call_user_func()
#26 /w/includes/Storage/DerivedPageDataUpdater.php(1430): MediaWiki\Revision\RenderedRevision->getRevisionParserOutput()
#27 /w/extensions/SpamBlacklist/includes/Hooks.php(74): MediaWiki\Storage\DerivedPageDataUpdater->getParserOutputForMetaData()
#28 /w/includes/HookContainer/HookContainer.php(160): MediaWiki\Extension\SpamBlacklist\Hooks->onEditFilterMergedContent()
#29 /w/includes/HookContainer/HookRunner.php(1475): MediaWiki\HookContainer\HookContainer->run()
#30 /w/includes/editpage/Constraint/EditFilterMergedContentHookConstraint.php(106): MediaWiki\HookContainer\HookRunner->onEditFilterMergedContent()
#31 /w/includes/editpage/Constraint/EditConstraintRunner.php(88): MediaWiki\EditPage\Constraint\EditFilterMergedContentHookConstraint->checkConstraint()
#32 /w/includes/EditPage.php(2345): MediaWiki\EditPage\Constraint\EditConstraintRunner->checkConstraints()
#33 /w/includes/EditPage.php(1905): EditPage->internalAttemptSave()
#34 /w/includes/EditPage.php(722): EditPage->attemptSave()
#35 /w/includes/actions/EditAction.php(73): EditPage->edit()
#36 /w/includes/actions/SubmitAction.php(38): EditAction->show()
#37 /w/includes/MediaWiki.php(542): SubmitAction->show()
#38 /w/includes/MediaWiki.php(322): MediaWiki->performAction()
#39 /w/includes/MediaWiki.php(904): MediaWiki->performRequest()
#40 /w/includes/MediaWiki.php(562): MediaWiki->main()
#41 /w/index.php(50): MediaWiki->run()
#42 /w/index.php(46): wfIndexMain()
#43 {main}

[thomas-topway-it]

@jaideraf noted, thank you, is this related to #854 ?

[jaideraf]

No, not related, I guess.

[jaideraf]

Oddly, the problem is not happening now. I don't now what has changed in the meantime. So I am closing the issue. If it will happen again I will reopen it. Thank you.

[jaideraf]

Ops, IT IS still happening, I forgot to change the format to datatables, sorry for the confusion. But it happens even without the intro param, so it is not related to #854

{{#ask: [[Category:Obra]] [[Creation date::+]]
 |?Creation date#-F[d/m/Y]=Data de criação
 |?Page creator#
 |format=datatables
 |limit=100
 |offset=0
 |link=all
 |sort=Creation date
 |order=desc
 |headers=plain
 |searchlabel=… mais resultados
 |class=datatable compact cell-border
 |prefix=none
}}

[thomas-topway-it]

ok, is there an url to check for this live ?

[jaideraf]

is there an url to check for this live ?

Sort of... the problem does not permit to save de page, so you will have to register an account with an e-mail, confirm the email, and then edit the following page, changing from broadtable to datatables:

https://wikincat.org/w/index.php?title=Usu%C3%A1rio:Jaider.ferreira/Testes&action=edit