I was adding fields to my Special:RunQuery form when its template suddenly stopped giving me #ask query results. I then added another identical #ask query as a test case to the template, and it took down the wiki pages that show the form, and failed with this lengthy error:
Internal error
Bad parser output text.
Backtrace:
#0 [internal function]: ParserOutput->replaceEditSectionLinksCallback(Array)
#1 /path/to/includes/parser/ParserOutput.php(160): preg_replace_callback('#<(?:mw:)?edits...', Array, '<p><br />?</p>?...')
#2 /path/to/extensions/SemanticForms/includes/SF_FormUtils.php(894): ParserOutput->getText()
#3 /path/to/extensions/SemanticForms/includes/SF_FormPrinter.php(418): SFFormUtils::getFormDefinition(Object(Parser), '<noinclude>?Thi...', 1975)
#4 /path/to/extensions/SemanticForms/specials/SF_RunQuery.php(81): SFFormPrinter->formHTML('<noinclude>?Thi...', true, false, 1975, NULL, NULL, NULL, true, false)
#5 /path/to/extensions/SemanticForms/specials/SF_RunQuery.php(31): SFRunQuery->printPage('Specimen_find', false)
#6 /path/to/includes/SpecialPageFactory.php(458): SFRunQuery->execute('Specimen_find')
#7 /path/to/includes/Wiki.php(226): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
#8 /path/to/includes/Wiki.php(626): MediaWiki->performRequest()
#9 /path/to/includes/Wiki.php(533): MediaWiki->main()
#10 /path/to/index.php(57): MediaWiki->run()
#11 {main}
That same error message is also produced by:
/path/to/extensions/SemanticMediaWiki/maintenance$ php SMW_refreshData.php -v
On a page with the RunQuery form embedded, this error was produced:
MediaWiki internal error.
Original exception: exception 'MWException' with message 'Bad parser output text.' in /path/to/includes/parser/ParserOutput.php:180
Stack trace:
#0 [internal function]: ParserOutput->replaceEditSectionLinksCallback(Array)
#1 /path/to/includes/parser/ParserOutput.php(160): preg_replace_callback('#<(?:mw:)?edits...', Array, '<p><br />?</p>?...')
#2 /path/to/extensions/SemanticForms/includes/SF_FormUtils.php(894): ParserOutput->getText()
#3 /path/to/extensions/SemanticForms/includes/SF_FormPrinter.php(418): SFFormUtils::getFormDefinition(Object(Parser), '<noinclude>?Thi...', 1975)
#4 /path/to/extensions/SemanticForms/specials/SF_RunQuery.php(81): SFFormPrinter->formHTML('<noinclude>?Thi...', false, true, 1975, NULL, NULL, NULL, true, true)
#5 /path/to/extensions/SemanticForms/specials/SF_RunQuery.php(31): SFRunQuery->printPage('Specimen_find', true)
#6 /path/to/includes/SpecialPageFactory.php(458): SFRunQuery->execute('Specimen_find')
#7 /path/to/includes/SpecialPageFactory.php(492): SpecialPageFactory::executePath(Object(Title), Object(RequestContext), true)
#8 /path/to/includes/parser/Parser.php(3129): SpecialPageFactory::capturePath(Object(Title))
#9 /path/to/includes/parser/Preprocessor_DOM.php(1044): Parser->braceSubstitution(Array, Object(PPFrame_DOM))
#10 /path/to/includes/parser/Parser.php(2861): PPFrame_DOM->expand(Object(PPNode_DOM), 0)
#11 /path/to/includes/parser/Parser.php(1033): Parser->replaceVariables('<div style="flo...')
#12 /path/to/includes/parser/Parser.php(340): Parser->internalParse('<div style="flo...')
#13 /path/to/includes/Article.php(1837): Parser->parse('<div style="flo...', Object(Title), Object(ParserOptions), true, true, 14680)
#14 /path/to/includes/Article.php(1759): Article->getOutputFromWikitext('<div style="flo...', false, Object(ParserOptions))
#15 /path/to/includes/Article.php(1012): Article->outputWikiText('<div style="flo...', false, Object(ParserOptions))
#16 /path/to/includes/Article.php(2002): Article->doViewParse()
#17 /path/to/includes/PoolCounter.php(183): PoolWorkArticleView->doWork()
#18 /path/to/includes/Article.php(547): PoolCounterWork->execute()
#19 /path/to/includes/Wiki.php(470): Article->view()
#20 /path/to/includes/Wiki.php(241): MediaWiki->performAction(Object(Article))
#21 /path/to/includes/Wiki.php(626): MediaWiki->performRequest()
#22 /path/to/includes/Wiki.php(533): MediaWiki->main()
#23 /path/to/index.php(57): MediaWiki->run()
#24 {main}
Exception caught inside exception handler: exception 'MWException' with message 'FauxRequest::getRequestURL() not implemented' in /path/to/includes/WebRequest.php:1106
Stack trace:
#0 /path/to/includes/WebRequest.php(1135): FauxRequest->notImplemented('FauxRequest::ge...')
#1 /path/to/includes/SkinTemplate.php(1033): FauxRequest->getRequestURL()
#2 /path/to/includes/SkinTemplate.php(498): SkinTemplate->buildContentNavigationUrls(Object(OutputPage))
#3 /path/to/includes/OutputPage.php(1856): SkinTemplate->outputPage(Object(OutputPage))
#4 /path/to/includes/Exception.php(183): OutputPage->output()
#5 /path/to/includes/Exception.php(209): MWException->reportHTML()
#6 /path/to/includes/Exception.php(392): MWException->report()
#7 /path/to/includes/Exception.php(471): MWExceptionHandler::report(Object(MWException))
#8 /path/to/includes/Wiki.php(536): MWExceptionHandler::handle(Object(MWException))
#9 /path/to/index.php(57): MediaWiki->run()
#10 {main}
- Blanking the form always alleviates the error condition.
- Restoring the form causes the error condition to return.
- Deleting the form lines 27 through 56 inclusive alleviates the error condition, but #ask queries still do not work.
- Restoring the form lines 27 through 56 inclusive does not cause the error condition to return, but #ask queries still do not work.
Form lines 27 through 56 look like this:
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" |
! style="text-align:left; font-weight:normal;" colspan="2" | <nowiki />
Everything below is optional, you may leave it blank if you choose. The information entered below will be preloaded for you when the search results allow you to enter in specimens that were not found. It will only work if ALL the certification numbers you enter above are identical for all of the below information. So, if you enter any of the below information, it must be correct for each certification number you entered above, or you will have to change it manually on the Specimen form. Only enter one bit of information for each field, except the '''Designation''' field, where more than one is allowed.
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" |
! Type:
| {{{field | Type | size=10 | values from property=Type }}} |
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" | |||
! Certified by:
| {{{field | Certified by | input type=combobox | size=30 | values from property=Certified by }}} |
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" | ||||
! Grade:
| {{{field | Grade | input type=combobox | size=10 | values from property=Grade }}} |
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" | ||||
! Designation:
| {{{field | Designation | values from property=Designation}}} |
Separate multiple entries with a comma.<br />
Examples:<br />
'''Proof, Ultra Cameo'''<br />
'''Proof, Ultra Cameo, Star'''<br />
'''Proof, Cameo'''<br />
'''Proof'''<br />
'''Proof, Deep Cameo'''<br />
'''Proof-Like'''<br />
'''Deep Mirror Proof-Like'''<br />
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" |
! Conserved by:
| {{{field | Conserved by | input type=combobox | values from property=Conserved by }}} |
| - class="mw-collapsible mw-collapsed" id="mw-customcollapsible-findHelp" | |||
! Problem:
| {{{field | Specimen problem | input type=combobox | values from property=Specimen problem }}} |
I have not been able to figure out what exactly causes the error condition to appear, and I think it may not be directly related to anything the user (me) is doing. But, hopefully figuring out what causes it to alleviate will be sufficient for finding the cause in the code, and fixing the bug. I still don't know why #ask queries stopped working.
Still, the same situation repeated often enough that I don't think data entry is a factor. The error condition occurred even when just going to the Special:RunQuery form page, before any data was entered (I'm not 100% sure of that, since I can't get the error to repeat on command). In all tested queries, I only used the first field, while others were left blank (if present). Some queries I used were these:
Since the first line of the errors seems to be related to the section edit links, I suspect this bug is actually a problem with magic words, since I have the magic word NOEDITSECTION in my template, and it does not function, as reported in this bug:
https://bugzilla.wikimedia.org/show_bug.cgi?id=33418
Version: unspecified
Severity: critical