String not matched

This is a strange problem. There hasn’t been any change in the API since a long time but over the past few days, there is an interim problem and every other api request fails with a
{“error”:“string not matched”}

What does this mean to start with? All the other APIs that I wrote are working but there is one complex that aggregates other APIs - thats the one that fails.

Any help is greatly appreciated.

I’m getting the same error. Were you able to solve it?