Grunt run reported an error.

  node.js, question

grunt-cli: The grunt command line interface. (v0.1.13)

Fatal error: Unable to find local grunt.

If you’re seeing this message, either a Gruntfile wasn’t found or
grunt hasn’t been installed locally to your project. For more
information about installing and configuring grunt, please see the
Getting Started guide:
It should be.GruntfileLost,
It is no use trying to reinstall. How to solve it? . . Ladies and gentlemen. . . System macOSX

Gruntfile.jsI wrote the Grunt configuration file myself, and I need to write it myself! ! !