```
2021-01-05 21:32:04 [X-Ta0wpAIDsAAE5NTsIAAACL] mw1347 mediawikiwiki 1.36.0-wmf.25 exception ERROR: [X-Ta0wpAIDsAAE5NTsIAAACL] /w/api.php Error from line 100 of /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/SpamFilter/AbuseFilter.php: Class 'AbuseFilter' not found {"exception_id":"X-Ta0wpAIDsAAE5NTsIAAACL","exception_url":"/w/api.php","caught_by":"entrypoint"}
[Error Error] (/srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/SpamFilter/AbuseFilter.php:100) Class 'AbuseFilter' not found
#0 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/SpamFilter/Controller.php(55): Flow\SpamFilter\AbuseFilter->validate(DerivativeContext, Flow\Model\PostRevision, NULL, Title, Title)
#1 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/Block/AbstractBlock.php(251): Flow\SpamFilter\Controller->validate(DerivativeContext, Flow\Model\PostRevision, NULL, Title, Title)
#2 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/Block/TopicListBlock.php(107): Flow\Block\AbstractBlock->checkSpamFilters(NULL, Flow\Model\PostRevision)
#3 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/Block/AbstractBlock.php(144): Flow\Block\TopicListBlock->validate()
#4 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/SubmissionHandler.php(121): Flow\Block\AbstractBlock->onSubmit(array)
#5 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/WorkflowLoader.php(62): Flow\SubmissionHandler->handleSubmit(Flow\Model\Workflow, DerivativeContext, array, string, array)
#6 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/Api/ApiFlowBasePost.php(22): Flow\WorkflowLoader->handleSubmit(DerivativeContext, string, array)
#7 /srv/mediawiki/php-1.36.0-wmf.25/extensions/Flow/includes/Api/ApiFlow.php(108): Flow\Api\ApiFlowBasePost->execute()
#8 /srv/mediawiki/php-1.36.0-wmf.25/includes/api/ApiMain.php(1612): Flow\Api\ApiFlow->execute()
#9 /srv/mediawiki/php-1.36.0-wmf.25/includes/api/ApiMain.php(592): ApiMain->executeAction()
#10 /srv/mediawiki/php-1.36.0-wmf.25/includes/api/ApiMain.php(563): ApiMain->executeActionWithErrorHandling()
#11 /srv/mediawiki/php-1.36.0-wmf.25/api.php(90): ApiMain->execute()
#12 /srv/mediawiki/php-1.36.0-wmf.25/api.php(45): wfApiMain()
#13 /srv/mediawiki/w/api.php(3): require(string)
#14 {main}
```