Display Google static map will get NSURLConnection finished with error and get blank image

I want to show google static map in the ios device.
I have a url and getHttpImage function below , it's working in the web browser,ios Unity Editor and android device , but it will show blank and get an error below in the ios device.

Error:
"You are using download over http. Currently Unity adds NSAllowsArbitraryLoads to Info.plist to simplify transition, but it will be removed soon. Please consider updating to https.
NSURLConnection finished with error - code -1002
Error while downloading: Unknown Error
"

URL:
https://maps.google.com/maps/api/st...pg9Xv-tpx47puQlvBCI6deN|33.282798,-111.856303



Unity code snippet

Code (CSharp):

1.     IEnumerator getHttpImage (Image image,string url,int width,int height) {
2.  
3.         //A URL where the image is stored
4.         //Call the WWW class constructor
5.         WWW imageURLWWW = new WWW(url);
6.  
7.         //Wait for the download
8.         yield return imageURLWWW;      
9.  
10.         //Simple check to see if there's indeed a texture available
11.         if(imageURLWWW.texture != null) {
12.  
13.             if(getResponseCode(imageURLWWW) == 403){
14.                 //do it again
15.                 setHttpImage(image,url,width,height);
16.                 yield return null;
17.             }
18.  
19.            
20.             //Create a new sprite using the Texture2D from the url.
21.             //Note that the 400 parameter is the width and height.
22.             //Adjust accordingly
23.             Sprite sprite = Sprite.Create(imageURLWWW.texture, new Rect(0, 0, width, height), Vector2.zero);
24.  
25.             //Assign the sprite to the Image Component
26.             image.sprite = sprite;
27.             image.SetNativeSize ();
28.  
29.         }
30.  
31.         yield return null;
32.     }

XCode Info.plist content already include below:

    <key>NSAppTransportSecurity</key>



    <dict>



      <key>NSAllowsArbitraryLoads</key>



      <true />



      <key>NSExceptionDomains</key>



      <dict>



        <key>drive.google.com</key>



        <dict>



          <key>NSExceptionRequiresForwardSecrecy</key>



          <false />



          <key>NSIncludesSubdomains</key>



          <true />



        </dict>



        <key>maps.google.com</key>



        <dict>



          <key>NSExceptionRequiresForwardSecrecy</key>



          <false />



          <key>NSIncludesSubdomains</key>



          <true />



        </dict>



      </dict>



    </dict>

How can I fix it?