android studio has been building

I built a project abroad a while ago, and after returning to China, I changed a computer and found that it couldn't be opened, and it was still building. No matter what, I rebuilt a project and copied all the previous source files. , actually succeeded. After thinking about it, I found that there was a problem in the gradle folder. Later, I copied the gradle folder in the new project to the previous project and replaced the previous one. It worked.