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!

  • Anyone have any suggestions on this?
    – fodney
    Jan 17, 2019 at 13:29
  • Did you try to rename the original vendor folder to say vendor-old and do a composer install ?
    – MisterMike
    Feb 8, 2021 at 8:21

1 Answer 1


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

  • Unfortunately I don't have a backup for the database at this point. Any other options before I blow this up and start over? Thanks!
    – fodney
    Feb 7, 2019 at 19:23
  • Yeah... nothing comes to mind without being able to restore the database, unfortunately.
    – Brad Bell
    Feb 8, 2019 at 3:23

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