Description of the problem: I get the error “403 Forbidden (nginx)” when I try to run my experiment. The console gives the error “failed to load resource: the server responded with a status of 403 ()”.
I already tried removing the old cookies from my browser, but that didn’t help. I think the error has to do with the Pavlovia & JSPsych plugins, but I’m not sure.
i had the same problem with one of my experiment. Turns out that for some reason on some versions of the experiment pavlovia fails to create a proper link for running the experiment. Try simply adding /html at the end of the link.