使用github 的源码时，A problem occurred evaluating project ':app'. > path may not be null or empty string. path='null'

A problem occurred evaluating project ':app'. > path may not be null or empty string. path='null'

出现如上报错，

If you downloaded the app from github, it is possible that signing configs are note adapted. Try like this to comment code on android/app/build.gradle :

注释掉android/app/build.gradle文件中的以下内容，

参考：

https://stackoverflow.com/questions/54457245/a-problem-occurred-evaluating-project-app-path-may-not-be-null-or-empty-st