The solution is as follows:

1. Switch to the directory where your project is located, right-click to select git bash here, ALT + F12

can be used in idea

2. In the terminl window, enter the command in turn:

2

git pull

git pull origin master

git pull origin master –allow-unrelated-histories

3. Push your project again in idea, success

If not: git push – U origin master – F