Rest API requests no longer working (5.91)

Having a strange issue - none of my API requests (Either calling them manually or from code, using RestRequestObjectBuilder) results in error respone from the API:

Unable to parse HTTP request

None of the methods - put, get, patch, delete work, error returned is the same.

Katalon Studio 5.71 has no problems, getting correct API response (200), and data is created.

Do you have any ideas why is it happening? A changes in the API architecure I’m not aware of, or is it a technical problem with the particular build?


I have no issue running on 5.9.1. I managed to call REST and SOAP API