Several Flow browser tests are failing with "Error modules: ext.thanks.flowthank."
The failing step is "page has no ResourceLoader errors" from mediawiki_selenium. Essentially, mw.loader.getState( 'ext.thanks.flowthank' ) returns 'error' in those cases.
Executing that command manually on beta always return 'ready'.
I cannot reproduce the error by running the tests locally against a local or mw-vagrant server but I get the error about 50% of the time when running the tests locally against beta.