How can I solve the error on the application screen?

Hello. I created an application that connected my application to Google Sheets and reflected the data I received from there to the screen. The application renews itself every second. Sometimes this warning appears on the screen. When I press next to the error screen, the error screen disappears. But it comes back a little later. I would be happy if you help.


It seems that you are trying to do a subtraction where one of the arguments is a list...but without further detail...can you show your relevant blocks?

ListView.Elements is a list, if you want to get one item from that list use the "select list item" block.

Thanks for help. I fixed it.

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