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This page shows an example on how a stack trace of an wiki instance looks like which should be added to a issue report:
[30ae2c05] /wiki/Special:WantedProperties Exception from line 119 of /.../w/extensions/SemanticMediaWiki/includes/dataitems/SMW_DI_Property.php: There is no predefined property with "_SD_CP".
Backtrace:
#0 /.../w/extensions/SemanticMediaWiki/includes/storage/SQLStore/WantedPropertiesCollector.php(127): SMW\DIProperty->__construct(string)
#1 /.../w/extensions/SemanticMediaWiki/includes/storage/SQLStore/WantedPropertiesCollector.php(65): SMW\SQLStore\WantedPropertiesCollector->getProperties(ResultWrapper)
#2 /.../w/extensions/SemanticMediaWiki/includes/storage/CacheableResultCollector.php(60): SMW\SQLStore\WantedPropertiesCollector->runCollector()
#3 /.../w/extensions/SemanticMediaWiki/includes/querypages/WantedPropertiesQueryPage.php(105): SMW\Store\CacheableResultCollector->getResults()
#4 /.../w/extensions/SemanticMediaWiki/includes/querypages/QueryPage.php(180): SMW\WantedPropertiesQueryPage->getResults(SMWRequestOptions)
#5 /.../w/extensions/SemanticMediaWiki/includes/specials/SpecialWantedProperties.php(51): SMW\QueryPage->doQuery(integer, integer)
#6 /.../w/includes/SpecialPage.php(631): SMW\SpecialWantedProperties->execute(NULL)
#7 /.../w/includes/SpecialPageFactory.php(488): SpecialPage->run(NULL)
#8 /.../w/includes/Wiki.php(298): SpecialPageFactory::executePath(Title, RequestContext)
#9 /.../w/includes/Wiki.php(602): MediaWiki->performRequest()
#10 /.../w/includes/Wiki.php(467): MediaWiki->main()
#11 /.../w/index.php(49): MediaWiki->run()
#12 {main}
