Check validity of ssl certificate with traceback

After system update to 4.4 diagnostic found problem check validity of ssl certificate with traceback

Traceback (most recent call last): File “/usr/lib/python2.7/dist-packages/univention/management/console/modules/diagnostic/init.py”, line 280, in execute result = execute(umc_module, **kwargs) File “/usr/lib/python2.7/dist-packages/univention/management/console/modules/diagnostic/plugins/02_certificate_check.py”, line 284, in run cert_verify = list(verify_local(all_certificates)) File “/usr/lib/python2.7/dist-packages/univention/management/console/modules/diagnostic/plugins/02_certificate_check.py”, line 258, in verify_local for error in verifier.verify(cert): File “/usr/lib/python2.7/dist-packages/univention/management/console/modules/diagnostic/plugins/02_certificate_check.py”, line 204, in verify for error in self._verify_timestamps(cert_path): File “/usr/lib/python2.7/dist-packages/univention/management/console/modules/diagnostic/plugins/02_certificate_check.py”, line 164, in _verify_timestamps with open(cert_path) as fob: IOError: [Errno 2] No such file or directory: ‘’

Univention Support Database - Renewing the TLS/SSL certificates

Find cert_path in LetsEncrypt.

Please help

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