Integrity check failiure after upgrade

Hi.. I just upgraded server to 9.1.6.2 and got the following error:

Some files have not passed the integrity check. Further information on how to resolve this issue can be found in our documentation. (List of invalid files… / Rescan…)

If I click on List of invalid files I get

Technical information
=====================
The following list covers which files have failed the integrity check. Please read
the previous linked documentation to learn more about the errors and how to fix
them.

Results
=======
- calendar
** - EXCEPTION**
** - OC\IntegrityCheck\Exceptions\InvalidSignatureException**
** - Certificate has been revoked.**

Raw output
==========
Array
(
** [calendar] => Array**
** (**
** [EXCEPTION] => Array**
** (**
** [class] => OC\IntegrityCheck\Exceptions\InvalidSignatureException**
** [message] => Certificate has been revoked.**
** )**

** )**

)

And if I click on Rescan it just takes me back to the page I am on (i.e. https://prsc-cloud.org/owncloud/settings/admin).

If I copy the link under the Rescan I get:

https://prsc-cloud.org/owncloud/settings/integrity/rescan?requesttoken=OCkDLhIeAFIbEXohACYjQkgjWwEnZj01EQwjND1AKB4%3D%3AhOEHEOydmKIwgkf%2BpM04UPPxWaleGqJk3wsV7eiy6K4%3D

How do I fix this?

Ben

Hi,

do you have got a solution? I've the some problem, with a new installation ownCloud 9.1.6 (stable) on raspberry.

I just have used the search function of the forums:

https://central.owncloud.org/search?q=Certificate%20has%20been%20revoked

and found the solution in an existing thread: