解决 执行jacocoTestReport生成报告时 报Unable to read execution data file coverage.ec

1. 问题

1.1 运行  jacocoTestReport

gradle jacocoTestReport
$ gradle jacocoTestReport
报如下错
* What went wrong:
Execution failed for task ':app:jacocoTestReport'.
> Unable to read execution data file E:\app\build\outputs\code-coverage\connected\coverage.ec
2.解决
将build.gradle
jacoco {
   
    toolVersion = "0.7.9"
}
改为
jacoco {
  
    toolVersion = "0.7.4+"
}
再运行  
  gradle jacocoTestReport  报告成功生成