Please any one describe my following error?

testing
1

modules.js?hash=ff9589b002aab2c12c57850785e516b644676cdf:4229 Uncaught TypeError: Cannot read property ‘apply’ of undefined
at context.beforeEach.context.setup.Mocha.beforeEach

2

It is an error with one of the unit tests in Mocha

3

how can solve this error?

4

if you are not doing any unit tests, then one of the packages that you are using was causing the error.

Can you post the complete error message?