Getting PHP Error on upgrade from 3.0.36 to 3.1 I just updated to 3.1 and I'm getting the php error:

PHP Notice – yii\base\ErrorException

Undefined index: settings

It probably has to do with the Cheat Sheet plugin.  I deleted that folder in the vendor directly but no luck.

I can send along the link showing the errors.

Thank you!
If you restore from a 3.0.36 database backup, then update to the latest Craft 3.1 release (currently 3.1.2.2, this shouldn't be an issue anymore.