Hi everyone, during an experiment the following error occured on a Live page (from the console: reconnecting-websocket-iife.min.js:1  WebSocket connection to failed: Error during WebSocket handshake: 'Sec-WebSocket-Accept' header is missing). I implemented an iframe for video communication and the otree chat on that page, none of which worked. This was also the only time this error occured. Any ideas what to do to prevent? The browser used was Edge (on a Windows computer).

Thanks for any input!
Nathalie