Guide if you got Error 403

Works on Chromium based browser (Including Bromite)

Click the three dots on the upper right corner and then click settings

Type cookies on the settings search bar and then click the "Cookies and other site data" options

When you arrived on the "Cookies and other site data" menu, scroll down

Look for "Sites that can always use cookies" option, and then click the "Add" button

Type colab.research.google.com and tick the "Including third-party cookies on this site" checkbox, and then click the "Add" button

You're done. Restart the colab (the runtime) and see if it now works