How to set referrer policy? Getting strict-origin-when-cross-origin error

I recently deployed my meteor app but the login page constantly refreshes. In console it seems that Meteor initially makes a POST request to establish a websocket, but it is yielding a 404. Oddly after a number of screen refreshes the request is resent as a GET request and it completes. Does anyone come across this issue before how to resolve the issue? Is there a setting in the mup.js file that needs to be changed?

Does anyone know how to solve this issue?