Cannot read property 'toString' of undefined with mocha 6.x upgrade

[bonesoul]

here is my config;

  mochaTest: {
     options: {
       reporter: 'mochawesome',
       reporterOptions: {
         reportDir: 'build/test/mocha/',
         reportName: 'result',
         inlineAssets: true
       },
       quiet: false,
       ignoreLeaks: true,
       globals: ['app', 'env']
     },
     src: ['tests/**/*.js']
   },

and getting this after upgrading to mocha 6.x series

Warning: Cannot read property 'toString' of undefined Use --force to continue.

[bonesoul]

related to; almirfilho@8cdb5ae

[stephenh]

Ran into the same thing; thanks @bonesoul for the link to the fix!

[bonesoul]

hopefully we can get a proper fix soon :/