About my application loading

Hi pals.
I have a big problem. One very awkard, I finish working on my ionic project 2 days ago. I left it working fine. But, I returned to continue working today an the project don’t work.
It returns me a black window. I put a breakpoint on the line this.initializeApp(); on app.component.ts and nothing happened. I checked the console and don’t show any error.
I heard something about erase some folder but I didn’t find the post on internet.
Could anyone help me please?

People, I found the issue. I build the project on verbose mode and found an intruction that I put for check and forgot remove it.