Not find variable: experiment functions locally but crashes online

URL of experiment: https://run.pavlovia.org/TSKang/js-2-april-11-40/html

Description of the problem: before beginning good practice blog of my experiment I get an error which says that the variable cannot be found. The aim of the section immediately following the crash is to present a number of images drawn from the list in a stimulus control file. Note that the error cannot be explained by mislabelling of variable names, nor of Errors in the spelling of the file names. If this were the case, surely they would be a local as well as online crash.

Any assistance is greatly appreciated!

Please could you paste the exact error message.

A common solution is to put varName=0 in a Begin Experiment code component.