Join of the member fails

Hi@all,

because I have the errors on a newly installed member in the system diagnostics:

grafik

I tried to re-run the joint. However, this reports the error:

grafik

In the log file I find:

...
Try to download idp metadata (54/60)
Try to download idp metadata (55/60)
Try to download idp metadata (56/60)
Try to download idp metadata (57/60)
Try to download idp metadata (58/60)
Try to download idp metadata (59/60)
Try to download idp metadata (60/60)
Could not download IDP metadata for https://ucs-sso.stedry.local/simplesamlphp/saml2/idp/metadata.php
'NoneType' object has no attribute 'find'
Unsetting umc/saml/idp-server
Module: setup_saml_sp
Module: kopano-cfg


**************************************************************************
* Join failed!                                                           *
* Contact your system administrator                                      *
**************************************************************************
* Message:  Please visit https://help.univention.com/t/8842 for common problems during the join and how to fix them -- FAILED: 92univention-management-console-web-server.inst
**************************************************************************
Tue Jun 23 12:07:28 CEST 2020: finish /usr/sbin/univention-join

how can I fix this?

with best
sven

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