Error when I try to open Report Fault in CMS

CMS Version

v3.1.1 Docker Version on Ubuntu Server 16.04

Player Type

Android v9

Player Version

2.217

Issue

Since the CMS update from v3.0.2 to version 3.1.1 Report Fault does not work anymore.
I get the following error → Unexpected Error, please contact support.

How can I fix the problem?

Report Fault Error
BR
Robert