Pavlovia Error when Piloting

I have pushed my experiment and all of the necessary files onto my repository. It looks as though everything is there and it should run smoothly, just as it does in PsychoPy. However, every time I try to pilot my experiment it creates a “403 Forbidden” error. I have read a lot of posts regarding this same error but nothing seems to apply to me. Does anyone have any ideas?

Please could you post a sample piloting link?