Google Picker API Invalid origin value error
Today Google Picker stopped working in my Google Sheets add-on without any changes to the code. The error in the modal dialogue reads: Invalid origin value. The errors in console are: Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('https://docs.google.com') does not match the recipient window's origin ('https://n-a6p4dqsl***d6wq-
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