On rEFLWf4ec65193e15: Localisation updates from https://translatewiki.net., I get an exception when converting a LiquidThreads page, though it seems to look right afterwards:
Maybe a slave lag issue, but unclear.
vagrant@mediawiki-vagrant:~$ mwscript extensions/Flow/maintenance/convertLqtPageOnLocalWiki.php --srcpage 'Wiki_talk:LQT_page_2' --logfile '/tmp/LQT_page_2_logfile.log' [2016-09-23 00:55:37] Starting LQT conversion of page Wiki_talk:LQT_page_2 [2016-09-23 00:55:37] Archiving page from Wiki talk:LQT page 2 to Wiki talk:LQT page 2/LQT Archive 1 [2016-09-23 00:55:43] Importing to Wiki talk:LQT page 2 [2016-09-23 00:55:49] Importing header [2016-09-23 00:55:50] Imported 2 revisions for header [2016-09-23 00:55:50] Importing new topic [2016-09-23 00:55:50] Finished importing topic title with 1 revisions [2016-09-23 00:55:50] Importing post [2016-09-23 00:55:50] Finished importing post with 1 revisions [2016-09-23 00:55:50] Finished importing topic [2016-09-23 00:56:08] Importing new topic [2016-09-23 00:56:08] Finished importing topic title with 1 revisions [2016-09-23 00:56:08] Importing post [2016-09-23 00:56:08] Finished importing post with 1 revisions [2016-09-23 00:56:08] Finished importing topic [2016-09-23 00:56:25] Flow\Import\LiquidThreadsApi\ApiBackend::retrieveThreadData: Failed API call against local with conditions : {"thpage":"Wiki talk:LQT page 2\/LQT Archive 1","thstartid":8} [2016-09-23 00:56:25] Exception while importing: Wiki talk:LQT page 2 [2016-09-23 00:56:25] exception 'Flow\Import\ImportException' with message 'Null response from API module:{"error":{"code":"internal_api_error_InvalidArgumentException","info":"Exception Caught: Database::makeList: empty input for field thread_parent"}}' in /vagrant/mediawiki/extensions/Flow/includes/Import/LiquidThreadsApi/Source.php:242 Stack trace: #0 /vagrant/mediawiki/extensions/Flow/includes/Import/LiquidThreadsApi/CachedData.php(150): Flow\Import\LiquidThreadsApi\ApiBackend->retrieveThreadData(Array) #1 /vagrant/mediawiki/extensions/Flow/includes/Import/LiquidThreadsApi/Iterators.php(127): Flow\Import\LiquidThreadsApi\CachedThreadData->getFromPage('Wiki talk:LQT p...', 8) #2 /vagrant/mediawiki/extensions/Flow/includes/Import/LiquidThreadsApi/Iterators.php(102): Flow\Import\LiquidThreadsApi\TopicIterator->loadMore() #3 /vagrant/mediawiki/extensions/Flow/includes/Import/Importer.php(604): Flow\Import\LiquidThreadsApi\TopicIterator->next() #4 /vagrant/mediawiki/extensions/Flow/includes/Import/Importer.php(129): Flow\Import\TalkpageImportOperation->import(Object(Flow\Import\PageImportState)) #5 /vagrant/mediawiki/extensions/Flow/includes/Import/Converter.php(187): Flow\Import\Importer->import(Object(Flow\Import\LiquidThreadsApi\ImportSource), Object(Title), Object(Flow\Import\SourceStore\File)) #6 /vagrant/mediawiki/extensions/Flow/includes/Import/Converter.php(138): Flow\Import\Converter->doConversion(Object(Title), NULL) #7 /vagrant/mediawiki/extensions/Flow/includes/Import/Converter.php(107): Flow\Import\Converter->convert(Object(Title)) #8 /vagrant/mediawiki/extensions/Flow/maintenance/convertLqtPageOnLocalWiki.php(79): Flow\Import\Converter->convertAll(Array) #9 /vagrant/mediawiki/maintenance/doMaintenance.php(110): ConvertLqtPageOnLocalWiki->execute() #10 /vagrant/mediawiki/extensions/Flow/maintenance/convertLqtPageOnLocalWiki.php(86): require_once('/vagrant/mediaw...') #11 /var/www/w/MWScript.php(95): require_once('/vagrant/mediaw...') #12 {main} [2016-09-23 00:56:25] Finished LQT conversion of page Wiki_talk:LQT_page_2