Error occurs when enable the "Moderated" option

[AliMicrosoft]

Hi guys

When we enable the "Moderated" option in the Moderation and Feedback "Management" section
This error occurs:

"Your feedback could not be sent to some or all of the intended recipients, please try again later:
Object reference not set to an instance of an object."

And the sent message is not stored in the database

Software Versions

• DNN: 9.10.2
• Module: 6.7.0

To Reproduce

Steps to reproduce the behavior:

1. Go to 'Feedback Settings'
2. Click on 'Moderation and Feedback Management'
3. check the 'Moderated'
4. See error after try to send message on form