Error: write ECONNRESET

I am running a SOAP request calling a published working service. It worked on the first attempt. Since then the very same request fails with a Error: write ECONNRESET error. I know the service is up and running ok. Anyone got any idea what this error could be? The same thing happened when I used SOAP UI - it worked and then I got a Connection rest by peer: socket write error. I have tried numerous things to get round this error - resetting the sockets, swapping from wifi to ethernet. Periodically the request works but then I get the same error.
Any one else every experienced this? Other people in my team can are not having issues calling the service.

Same issue for me too for REST APIs collection, 95% of time it fails at same call in a collection, the same call runs successfully and tests are passed when it runs separately. Need a fix on this from Postman