I'm trying to generate an access token for a system user(Employee) and getting "Error performing query" message. I was able to create tokens until yesterday but it started failing today. Also worth mentioning that my messages using the API were getting delivered until yesterday and then the delivery stopped all of a sudden. The API gives 200 but the messages are not getting delivered. Appears that something is wrong with the setup but unable to pinpoint, please help.
Is there any solution?