If you are encountering the "Error handling callback: token mismatch" message while using the Evernote add-on in Gmail, you can follow these steps to reset and reauthorize the add-on:
- Open Gmail and locate the Evernote add-on within your sidebar.
- Click on the three-dot menu located within the Evernote add-on.
- Select Reset Settings.
- Click on Authorize Access.
- In the authorization window that appears, click on the Revoke Access button.
This actions will revoke any existing access permissions, allowing for a fresh authorization process.
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