Error: this header name is not correct content-type

Hi - my app suddenly started showing an error couple of hours ago. “this header name is not correct content-type” on API connectors. I have set header to content-type = application/json

Had been working ok earlier - sudden error over past few hours.

This should be fine now no?

yes seems so. thanks!

actually seems to be recurring again. could you check? any root cause?

Can you share a link?

I am having this same issue. What ended up being the resolution for this problem?