This error occurs in cases where you did not properly generate the token. To fix this error, you will need to:
- First login to Envato using the account that you used to purchase the theme
- Within the Getting Started>Enable Automatic Theme Updates section, try generating a new token from this link and ensure that you specify the permissions specifically provided within the screenshot below:
Once this is done, fill in the token generated still within the Getting Started>Enable Automatic Theme Updates section.