that sounds like you’re using it on a multi-site installation grazia1969, so if you want to remove you’ll have to ensure it’s inactive on all subsites (this is not Autoptimize but WordPress core actually).
hope this helps,
frank
Hi Frank, thanks for your prompt reply. There are subdomains connected to the main site (separate wordpress installed sites) but Autoptimize plugin it’s installed only on the main site.
http://www.tuttogatto.it
Alse the plugin is deactivated but I can still see that is working on the page – on the top bar with cache information
Might be a problem with object caching (memcache/ redis) maybe? If not I’m afraid I have no idea what is going on there grazia1969; deactivating and deleting a plugin is WordPress core functionality and the error you got is not coming from Autoptimize .. :-/
did you succeed in fixing this grazia1969 ?
No feedback so I assume this got resolved? Feel free to follow up if you still encounter issues!
have a nice day!
frank