Class "craft\contactform\models\Submission" not found

[mofman]

Hi There

As we don't use Contact Form we are getting Class "craft\contactform\models\Submission" not found, when event listeners are being registered.

Also according to the docs:
Supports and protects the following plugins automatically - [Formie](https://plugins.craftcms.com/formie), [FreeForm](https://plugins.craftcms.com/freeform), [Express Forms](https://plugins.craftcms.com/express-forms), [Contact Form](https://plugins.craftcms.com/contact-form) and [Comments](https://plugins.craftcms.com/comments).

However I cannot see any reference for any of these plugins in the sourcecode?

[cloudgrayau]

Strange.

Do you happen to have a custom "contact-form" plugin installed?

[mofman]

No we don't use Contact Form, we use Freeform...