Enable to copy the app

I’m try to copy the app but it has get following error massage. cloud you give me solution for the same.

Unable to read table ‘Receiving Form’. → Unable to copy external files due to: Unable to read table ‘Receiving Form’.

Please contact support@appsheet.com for help with this.

Do you know if you have any solution to this yet? I am currently experiencing the same problem with a table, when trying to copy an app. I know that the table works perfectly, and Appsheet can both read and write to it.

Please contact support@appsheet.com for help with this.