I've spent millions of tokens and asked to create more than one application, but the same problem always occurs. Apparently the creation is successful, but when I launch the front and back, when I access http://localhost:5173/ the page remains blank. Has anyone else experienced this and managed to solve it?

I've spent millions of tokens and asked to create more than one application, but the same problem always occurs. Apparently the creation is successful, but when I launch the front and back, when I access http://localhost:5173/ the page remains blank. Has anyone else experienced this and managed to solve it?