phpMyFAQ

Hi, my first post here.
I have FAQ versioning turned on, currently 3.2.5, although same error in previous version.
If I edit a FAQ and select a previous version, then save the FAQ, I get the error below.
Video of the error https://app.screencast.com/vn4pZPDWIRBcH
Error -
# **phpMyFAQ Fatal error ...