When i'm adding JS API of google map

   <script src="https://maps.googleapis.com/maps/api/js?key=MY_API_KEY&libraries=places">

This error appear

Source map error: Error: request failed with status 404 Resource URL: http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js Source Map URL: bootstrap.min.js.map

And this

> jQuery.Deferred exception: $(...).dateDropper is not a function @http://127.0.0.1:8000/assets/admin/js/scripts/extensions/date-time-dropper.js:20:19
j@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:29999
Deferred/then/g/</k<@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:30313
setTimeout handler*Deferred/then/g/<@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:30522
i@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:28017
fireWith@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:28783
fire@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:28819
i@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:28017
fireWith@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:28783
ready@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:31934
S@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:3:35
EventListener.handleEvent*@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:3:149
@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:220
@http://127.0.0.1:8000/assets/admin/vendors/js/vendors.min.js:2:225
 undefined

Loading failed for the <script> with source “http://127.0.0.1:8000/admin/js/scripts/pages/chat-application.js”.