Plugin data that could not be opened

It is probably my fault because I have been testing things and trying the JSON and the Google Sheets plugins in my project instead of create a new one. Now when I open my project I receive the warning that This project file contains plugin data that could not be opened.
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I believe I have deleted everything related with the Google Sheets that I tried. The JSON is working fine so I kept it. Here’s the screenshot to the Plugin setup:
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There’s no elements in Google Sheets, however it appears in the list when you have to select the data source:
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I am not sure if that is the problem. I have also cleared the cache in the Plugin manager but it didn’t solve the issue.

Any idea?