I have encountered a problem with the application duplication. It says that there is a large amount of data in Google Sheets. Although the tables are not associated with the application
Error text: An error occurred while duplicating your app
Duplicating an app can fail when it uses a large or complex Google Sheet. Please delete all rows and columns that your app is not using or where there is no data. Glide will append rows as needed, so you can remove all empty rows below the existing data on all of your sheets. After completing these steps, try duplicating your app again.
This just happened to me too, for the very first time. And like OP, I don’t use any Google Sheet at all. All of my data is stored in Glide tables, could this be a bug?