Students will often get an Error 403 if they attempt to login to Canvas while there are multiple Gmail accounts logged into in the same browser. This basically means that Canvas is attempting to use an account other than your school issued Gmail account (username@gcvs.org) to get access to Canvas


You can force it to use your School issued Gmail account by using the recommended way to log into Canvas: https://gcvs.freshdesk.com/solution/articles/33000231335-the-best-way-for-students-to-log-into-canvas