Fix.

node_modules/har-validator/lib/error.js

@@ -1,17 +0,0 @@
-function HARError (errors) {
-  var message = 'validation failed'
-
-  this.name = 'HARError'
-  this.message = message
-  this.errors = errors
-
-  if (typeof Error.captureStackTrace === 'function') {
-    Error.captureStackTrace(this, this.constructor)
-  } else {
-    this.stack = (new Error(message)).stack
-  }
-}
-
-HARError.prototype = Error.prototype
-
-module.exports = HARError