Problem: Installing OPSI on a ucs@school Slave Fails

Problem:

Installing OPSI on a ucs@school slave fails.

Environment

You will get errors during join and in the file /var/log/univention/join.log you will see a message like this:
ERROR: 'OpsiClient' object has no attribute 'depotWebdavUrl'

Solution

This happens when the server where you want to install OPSI has been registered as an OPSI client before. An OPSI client can not be an OPSI server at the same time.
Unregister the server from OPSI and re-run the join script.

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