JS Syntax Error! invalid syntax (<unknown>, line 1)

Your Excel file has many many blank rows

PsychoPy can see 1281 conditions and I think you only have 640

Here is a fixed version
CultureEnsembleDistributions.xlsx (29.1 KB)

Same with your practice trials

It should look like this

pracdistr.xlsx (9.0 KB)

I think there is also an error in code_2 (trial routine)

if( /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ) {
  quitPsychoJS('Mobile device detected. Goodbye!', false)
}

but it looks like Is it possible to make Pavlovia experiment inaccessible on tablets and mobile devices? - #3 by TimCottier

My suggestion on that thread is to require a key press to advance. For testing you could try disabling the code routine if you are still having issues with the fixed spreadsheets.