Google Street View Not Working

[ShaningYu]

Several months ago, the Google Street View worked well in my application in html format. 

Then, I created an aspx page and loaded all of the HTML code into it.  When I click the Google Street Map again, I received warning message: "Oops! Something went wrong.  This page did not load Google Maps correctly.  See the JavaScript code for technical details."  Through Chrome F12, the error message is Google Maps API error:

MissingKeyMapError.  Then, I checked  https://developers.google.com/maps/documentation/javascript/error-messages#missing-key-map-error

and followed the instruction (https://developers.google.com/maps/documentation/javascript/get-api-key ) and get the key.  I copied pasted the code:

<script async defer src="https://maps.googleapis.com/maps/api/js?key=myKeyHere&callback=initMap"
  type="text/javascript">

But I still get runtime error. Did I do something wrong?   Thanks if you can help..

[ShaningYu]

Re-worked on the key setting and got the problem solved.  Thanks for your review.

[ShaningYu]

I have to re-activate my thread again since it works on one of my deployed IIS service but not on another one.  In both of them the domains are the same.  Should I do some settings on the IIS?  Thanks.

[XanderBakker]

Please have a look at an important note placed at: Google Street View Widget 2.1 - 08/29/16 .  As it appears, the Widget is not conform to the Google Maps API Terms of Service!

[RobertScheitlin__GISP]

Shaning,

   You need to stop using Google StreetView in your application. There is no way to be compliant with Google TOS unlees you are only using the Google Maps API and a google basemap. You can NOT display a StreetView image with a map (i.e. esri map) other than a Google map.

Read up on Google TOS 10.4.d and 10.4.e

I recently took down my Google StreetView widget do to this TOS Violation.