MMM-MicrosoftToDo - invalid_grant

[msheen]

Hi!
I’ve installed the “MMM-MicrosoftToDo” module following the instructions provided.

Entered the relevant details in the config.js

And I get no tasks just a message saying:
“[] Error occurred invalid_grant. Check logs.”

Anybody any idea what this means ?
Or where log files are ?

Thanks in advance

[ral]

Had the same issue my solution was to go back and regenerate a new Auth Code and subsequent new Refresh Token.
I remember a logfile stating this has expired.
My take is:

• Client ID is permanent
• Client Secret is permanent
• Auth Code expires
• Refresh token will not work if the included Auth Code has expired