If the user enters a sheet name that does not exist, there should be an error message that says so. Right now it is a vague error that is very confusing and has led to a ton of open issues.
Update the GAS library to push this error if the sheet doesn't exist
Update the module to process this error and display it on the mirror
If the user enters a sheet name that does not exist, there should be an error message that says so. Right now it is a vague error that is very confusing and has led to a ton of open issues.