Feedback on Spring Boot Project

So I’ve been working on this coding challenge for the past few hours but I can’t get it good enough to be deployed. I’ve tried a few different strategies but I either get a bunch of memory errors (which I’ve fixed) or I get a bunch of conditions I can’t meet for it to be good enough for production. My repo is here

https://github.com/maltose26/Proxy.git

I’d appreciate any feedback or guidance on how to debug this and test it properly locally and maybe there’s something I’ve missed in my understanding of the problem