Hello @james_murillo,
We need a little bit more of info 
If you clone your project and add only one submission, does it return a 500 too?
Which version of kobo-install are you running? (You can know it with ./run.py --version)
Hello @james_murillo,
We need a little bit more of info 
If you clone your project and add only one submission, does it return a 500 too?
Which version of kobo-install are you running? (You can know it with ./run.py --version)