Something is causing a 502 error

When making API calls in Integromat I sometimes get this error.

RuntimeError

[502] An invalid response was received from the upstream server

I was getting 502 when trying to #mention entities in Fibery earlier today or yesterday for a little bit. Wonder if related. How long has it been happening for you? You might try again if it was just happening in a particular time period recently, it may have been temporary.