Please follow the below steps to authorize your Webex account inside Canvas.
1. Select the Virtual Meetings tab
2. Select Logout on the right side of your screen
3. If you have selected +New Meetings and are on this screen while viewing the error, you will need to select cancel to return to the main screen to logout
4. When the page refreshes, select Sign In to Webex Meetings
If prompted in the pop-up window, enter in your full SLCC email address and select Next
5. Select Accept to authorize Webex
6. Refresh your page to view meetings or to create a new meeting