The api url returns:
#0 /usr/local/apache/common-local/wmf-deployment/includes/db/Database.php(541): DatabaseBase->reportQueryError('Unknown column ...', 1054, 'SELECT rev_id,...', 'ApiQueryRevisio...', false)
#1 /usr/local/apache/common-local/wmf-deployment/includes/db/Database.php(877): DatabaseBase->query('SELECT rev_id,...', 'ApiQueryRevisio...')
#2 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiQueryBase.php(233): DatabaseBase->select(Array, Array, Array, 'ApiQueryRevisio...', Array, Array)
#3 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiQueryRevisions.php(307): ApiQueryBase->select('ApiQueryRevisio...')
#4 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiQuery.php(224): ApiQueryRevisions->execute()
#5 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiMain.php(478): ApiQuery->execute()
#6 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiMain.php(267): ApiMain->executeAction()
#7 /usr/local/apache/common-local/wmf-deployment/includes/api/ApiMain.php(251): ApiMain->executeActionWithErrorHandling()
#8 /usr/local/apache/common-local/wmf-deployment/api.php(116): ApiMain->execute()
#9 /usr/local/apache/common-local/live-1.5/api.php(3): require('/usr/local/apac...')
#10 {main}
Pinpointed to the tags rvprop. "<RoanKattouw> It's probably forgetting to join something then"
Version: 1.17.x
Severity: normal
URL: http://en.wikipedia.org/w/api.php?action=query&prop=revisions&title=User:Tisane/Test1&rvprop=ids|flags|timestamp|user|size|comment|content|tags|flagged&revids=370622948