In dire need of help, the addSubmission method is especiallygiving me trouble.

Here’s the link to the project.

https://drive.google.com/file/d/1O3NreoYwWN_M2NXJ3FScgi6iMRDfCLPU/view?usp=sharing

password is LookInside.

It’d be awesome if I could get an answer today. Thanks!