This is a mirror host of the KP Official Wiki on Miraheze. We dont actually mirror we host the same content
MediaWiki:Apierror-cannot-async-upload-file
From Kaiju Paradise Official Wiki
The parameters async and file cannot be combined. If you want asynchronous processing of your uploaded file, first upload it to stash (using the stash parameter) and then publish the stashed file asynchronously (using filekey and async).
