xolatgames
Hmm, how you try to run your exported game? From browser on the server itself? Or from browser on your PC while game is served actually at different location?
"Cross-Origin Request Blocked" -> This suggest your browser try to access domain different than your current one. If you serve your game lets say on domain example.com you should use websocket address as ws://example.com:888/ otherwise if you use just IP address or another domain (like try to connect with ws://somethigelse.com:888), then it may be treated as suspicious and blocked by browser.
If you serve game on different location than your local machine, then address I see in this log looks invalid (ws://127.0.0.1:888/), that is local address, but it's requested from client browser, so it expects server is also on client local machine?