macaca coverage -r java出错

macaca coverage -r java -f ./coverage.exec -c ./android_app_bootstrap/build/intermediates/classes/debug -s ./android_app_bootstrap/src/main/java --html ./reporter
>> please confirm java is installed, https://macacajs.github.io/coverage
>> helper.js:34:12 [master] pid:2592 command not found: java

当我运行macaca coverage命令时，报please confirm java is installed, https://macacajs.github.io/coverage
，是说我的java环境变量不对吗，我在命令行窗口直接敲java都可以的，不是我java环境变量的问题。

* **Macaca Version**:
>macaca -v
2.1.2

* **Macaca Doctor Logs**:
>macaca doctor

macaca-doctor version: 2.0.14

Node.js checklist:

node env: C:\Program Files\nodejs\node.exe
node version: v8.11.1

Android checklist:

JAVA version is `1.8`
JAVA_HOME is set to `C:\Program Files\Java\jdk1.8.0_151`
ANDROID_HOME is set to `E:\sdk`
Platforms is set to `E:\sdk\platforms\android-9`
ADB tool is set to `E:\sdk\platform-tools\adb.exe`
GRADLE_HOME is set to `D:\gradle-4.3.1`

Installed driver list:

android: 2.0.47

* **Operate System**:
win10专业版

* **Programming Language**:
android