Millisecond Forums

Hello,

I have an Inquisit webscript (https://mili2nd.co/yclb) that I'm trying to get to run from Sona (where participants sign up to a study) and once complete, the study should redirect back to Sona at the end to give students credits. As far as I can see both are set up correctly but I get error messages when I run it. It links to Inquisit fine but at the end of the study I get an error message when it is supposed to go back to Sona. The error message says 'Server Error - 404 file or directory not found'. 
Is there a way that you could check that everything looks OK from the Inquisit side and then I'll know it is a Sona issue? 

Thank you,
Eimear