My apps cannot load.error message: Unable to fetch app definition. Error:Length cannot be less than zero. Parameter name: length/nLength cannot be less than zero. Parameter name: length/n How to know where is error? Need to help,

I created one app which uses google spreadsheet as its database, later I copied this app into another app and used the same data. Now I look at the data on google drive which I have to store both apps, which I understand. But not like that, I can’t s...

how can I do this? I try to choose on dropdown it can not. I use this expression on valid if >> SELECT(Batch_qualify[Batch Virtual Column],[PO Virtual Column]=[_THISROW].[order]) …it show I try to choose and save , it show massege >> Help me please. ...