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Sometimes problems with functions execute permissions
Sometimes function execution throws, without any reason, Redeployment helps most of the time
Message: Missing "execute" permission for role "users". Only "["any","guests"]" scopes are allowed and "["users"]" was given.
TL;DR
The user is experiencing problems with executing functions due to missing permissions. They suggest removing the "guests" role and trying again. Sometimes redeploying the function resolves the issue. The specific error message states that the role "users" does not have the necessary "execute" permission, and only the "any" and "guests" scopes are allowed. 
Can you remove the guests and try again
