After upgrading one controller from a lower version to higher version if we upgrade the other controllers in the Site instead of upgrading the Site using Studio on the first controller, we might get the below error:


 

Solution 1:

Downgrade the Controller component on rest of the controllers but one and attempt to upgrade the Site using studio again

Solution 2:

You may shut down rest of the controller in the site and attempt to upgrade the site using manual scripts generated by Studio.
 

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Problem Cause

Rest of the controller fails to upgrade successfully as Site was not upgraded using the first controller.