I got an error on my Vue Js application which is :

app.js:168113 [Vue warn]: Failed to resolve async component: function LayoutVertical() {
  return Promise.all(/*! import() */[__webpack_require__.e(2), __webpack_require__.e(175), __webpack_require__.e(6), __webpack_require__.e(0), __webpack_require__.e(21), __webpack_require__.e(106)]).then(__webpack_require__.bind(null, /*! @/layouts/vertical/LayoutVertical.vue */ "./resources/js/src/layouts/vertical/LayoutVertical.vue"));
}
Reason: TypeError: Cannot read properties of null (reading '1')
warn @ app.js:168113
DevTools failed to load source map: Could not parse content for http://127.0.0.1:8000/js/vue-tour.umd.js.map: Unexpected token < in JSON at position 0
DevTools failed to load source map: Could not parse content for http://127.0.0.1:8000/js/chunks/index.js.map: Unexpected token < in JSON at position 0

I don't have any idea why this message is showing? Can you tell me any reasonse?