Cannot send feeedback (Object reference not set to an instance of an object)

[valadas]

Describe the bug

Cannot send feeedback (Object reference not set to an instance of an object)
Does not happen on all sites, I need to investigate for more details

Software Versions

• DNN: 09.01.01, 09.02.01
• Module: 06.06.01

To Reproduce

Steps to reproduce the behavior:
Still unclear, works on some sites, not on others

Error log

Nothing logged in admin logs or portals/_default/logs, just a module message saying 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.