process.executeAsync(); Exception

下記はappiumソース：AppiumDriverLocalService.javaのstartメソッド：

/**

• Starts the defined appium server.

• @throws AppiumServerHasNotBeenStartedLocallyException If an error occurs while spawning the child process.

• @see #stop()
  */
  public void start() throws AppiumServerHasNotBeenStartedLocallyException {
  lock.lock();
  try {
  if (isRunning()) {
  return;
  }

   try {														
       process = new CommandLine(this.nodeJSExec.getCanonicalPath(),														
               nodeJSArgs.toArray(new String[]{}));														
       process.setEnvironmentVariables(nodeJSEnvironment);														
       process.copyOutputTo(stream);														
       process.executeAsync();      //出了异常，在官网上提问下解决方案：这段代码出错一般是什么原因？如何让这个“进场创建”不出错？														
       ping(startupTimeout, timeUnit);														
   } catch (Throwable e) {														
       destroyProcess();														
       String msgTxt = "The local appium server has not been started. "														
               + "The given Node.js executable: " + this.nodeJSExec.getAbsolutePath()														
               + " Arguments: " + nodeJSArgs.toString() + " " + "\n";														
       if (process != null) {														
           String processStream = process.getStdOut();														
           if (!StringUtils.isBlank(processStream)) {														
               msgTxt = msgTxt + "Process output: " + processStream + "\n";														
           }														
       }														
   												
       throw new AppiumServerHasNotBeenStartedLocallyException(msgTxt, e); 　														
   }														
  

  } finally {
  lock.unlock();
  }
  }

Start in AppiumDriverLocalService.java at start(), especially the process.executeAsync() call and the surrounding exception handling. Trace how the Node.js executable, arguments, environment, and process output are supplied, then use the reported failure context to identify the cause. Done means the local Appium server starts without this exception and the failure behavior is verified.