This error may appear when opening or creating a record in one of the ABRA Flexi modules.
It is most commonly related to a corrupted or inconsistent user role (permissions) configuration, where the application attempts to display a section of a form for which the permissions are not correctly defined.
How to resolve the issue:
Create a new user role
ideally as a copy of a working (parent) role
Gradually adjust the permissions as needed
Assign the new role to the user
Log back in to the application
Alternative (quick verification):
log in as an administrator
if the error disappears, the cause is almost certainly related to the role/permissions