erros that I cant fix please help

I am running Traccar on Synoloy docker container. Mysql db connected and working fine , I am getting reports from all devices. My only problem is from the web interface I keep getting Web socket connection error and web browser console shows errors:

  Failed to load resource: the server responded with a status of 404 (Not Found) .                         /api/session?_dc=1555271832223:1 
  Unchecked runtime.lastError: The message port closed before a response was received.          my.serverurl.com/:1 
  Failed to load resource: the server responded with a status of 404 (Not Found)                           /fake-login.html:1 

Those 404 errors are expected and have nothing to do with your websocket problem.

thanks will try to look for the problem