I created a custom module, that was throwing back errors. So I disabled and removed it from the app/code dir.
Then I cleared
But I still kept getting an error that the Block name of the removed module doesn't exist.
I tried redeploying the static files, reindexing and setup:upgrade in the hope that would fix it, but no luck.
So I ended up removing all the files and reverting to a back up from 4 days earlier.
But the error still shows up in my system.log?
main.CRITICAL: Invalid block type: Vendor\ProductSlider\Block\Catalog\Product\ProductSlider