With that link the experiment runs until it gets to the first trial where I get the error
TypeError: Cannot assign to read only property ‘undefined’ of object ‘#’
which refers to the line: psychoJS.importAttributes(trials.getCurrentTrial());
As per my crib sheet, you may have blank columns in one of your conditions files [dvbridges] e.g., Unknown resource, conditions file
So, please could you upload your conditions file here?