Ucs 5.0 takeover error

I’m trying to takeover win2012r2 AD Domain , but this error appears .
Login to AD Domain was fine … followed manual instructions …

Now I’m switching down to 4.4 …

Best regards

UCS Version: 5.0-0 errata116

Traceback (most recent call last):
AttributeError: ‘int’ object has no attribute ‘find’
char_idx = address.find("@")
File “/usr/lib/python3/dist-packages/univention/management/console/modules/adtakeover/takeover.py”, line 1338, in rewrite_sambaSIDs_in_OpenLDAP
File “/usr/lib/python3/dist-packages/univention/management/console/modules/adtakeover/takeover.py”, line 312, in join_to_domain_and_copy_domain_data
takeover.join_to_domain_and_copy_domain_data(ip, username, password, self.progress)
File " /usr/lib/python3/dist-packages/univention/management/console/modules/adtakeover/ init.py", line 110, in copy_domain_data
result = func(self, request)
File " /usr/lib/python3/dist-packages/univention/management/console/modules/adtakeover/ init.py", line 61, in _background
Traceback (most recent call last):