Problem in running oxoo source code app on my one plus 6T device

Hi I am having problem while installing oxoo android source code. Everything shows perfect but when I run app after doing some changes on my mobile device it shows that oxoo keeps stopping. But in android studio it shows succesful ly installed. Please help me in this. Why this app not run on my phone. I am using OnePlus 6 T.

I don’t know how to code. I never learn Java but I wish to learn please guys help me out.