The initial connection displays an unsupported MIME type, but after refreshing the browser, everything functions correctly

Upon deploying the application on App Engine, the Chrome client initially encounters the following error.

"Refused to apply style from 'https://tournypoker.wl.r.appspot.com/styles/styles.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled."

After a few browser refreshes, the error disappears and everything appears to be functioning correctly. I have tried to troubleshoot by following other similar threads, but no success.

Below is some code that demonstrates how the style sheet is loaded in index.jade --

html(lang="en" ng-app="app")

head
    title Poker
    link(href="styles/styles.css" rel="stylesheet" type="text/css")
body
    #content(ng-view)
    script(type="text/javascript", src="socket.io/socket.io.js")
    script(type="text/javascript", src="js/libs/angular.min.js")
    script(type="text/javascript", src="js/libs/angular-route.min.js")
    script(type="text/javascript", src="js/app.js")
    script(type="text/javascript", src="js/controllers/lobby.js")
    script(type="text/javascript", src="js/controllers/table.js")
    script(type="text/javascript", src="js/controllers/chat.js")
    script(type="text/javascript", src="js/services/sounds.js")
    script(type="text/javascript", src="js/directives/seat.js")

Answer №1

It turns out that the GCP app engine standard environment does not support websockets, causing issues for the app that was trying to establish them. To resolve this, I made a simple change to my app.yaml file by switching to the app engine flex environment. This not only fixed the problem at hand but also resolved the websocket issue altogether.

[START gae_quickstart_yaml]

runtime: nodejs env: flex

network: session_affinity: true

manual_scaling: instances: 1 resources: cpu: 1 memory_gb: 0.5 disk_size_gb: 10

[END gae_quickstart_yaml]

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