Initialising the experiment: Failed to load resource: the server responded with a status of 404 ()

[wakecarter]

I think this thread will solve your problem

Stuck on Initializing Screen

URL of experiment: Sign in · GitLab Description of the problem: Though the experiment runs fine offline on PsychoPy, it gets stuck on an ‘initializing’ screen when running online on Pavlovia. Based on my research, it seems like it is probably an error in the JS code, but the developer tools have been unhelpful in finding the actually error. The error I get is: Failed to load resource: the server responded with a status of 404 (). There are no loaded in Python packages that seem to be a common i…