Authorization Error 400 invalid_request

[zoobernut]

I have been using this plugin for several years without fail. Once I set it up it just worked. Suddenly the other day it stopped working with the error "Authorization Error. Error 400: invalid_request" nothing was changed before this error happened. I updated our dokuwiki version and I updated the plugin and tried it again and still got the same error.

Does anyone have any ideas of what could be causing this?

Authorization Error
Error 400: invalid_request

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