我有一个使用JHipster构建的应用程序，可以在我的笔记本中构建并运行。但是，现在我正在尝试在DigitalOcean（小）Droplet中构建它，grunt首先警告几个核心，然后失败。我该怎么办呢？
Running "concurrent:dist" (concurrent) task
>> Warning: There are more tasks than your concurrency limit. After this limit
>> is reached no further tasks will be run until the current tasks are
>> completed. You can adjust the limit in the concurrent task options
:grunt_build FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':grunt_build'.
> Process 'command 'node'' finished with non-zero exit value 137