如何修复“ gradle.bat中的进程异常”

Question

一个月前，我使用flutter开发了一个移动应用程序，它运行良好，没有任何问题。今天我只想测试一些东西，但是当我执行时：

flutter run

调试控制台显示

ProcessException: Process "C:\Users\Renz\Documents\Flutter Projects\saomatic_v2\android\gradlew.bat" exited abnormally:
Exception in thread "main" java.lang.NullPointerException
    at org.gradle.wrapper.BootstrapMainStarter.findLauncherJar(BootstrapMainStarter.java:34)
    at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:25)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
  Command: C:\Users\Renz\Documents\Flutter Projects\saomatic_v2\android\gradlew.bat -v

我已经从尝试过该解决方案

1. Github repository of fluuter！

2. Stackoverlow question！