Error with calling Speaker Identification API. When i try to return a profile Id i get a Error: Error Domain=NSURLErrorDomain Code=-1012 "(null)"

Question

The following error message is what i get when i try to return a profile Id for enrolment. I have already tried to see if it is an authentication error by using the API console, everything seems to be returning fine over there. I have provided my implementation/sample code below. Currently I am using the objective c code from the link below as a bridge header for my swift app:

https://westus.dev.cognitive.microsoft.com/docs/services/563309b6778daf02acc0a508/operations/5645c3271984551c84ec6797

This is the error message i receive when i try to return the Profile Id for Enrolment:

"https://westus.api.cognitive.microsoft.com/spid/v1.0/identificationProfiles?entities=true 2021-03-23 14:56:16.205386-0400 Reka[50677:760200] Error: Error Domain=NSURLErrorDomain Code=-1012 "(null)" UserInfo={NSErrorFailingURLStringKey=https://westus.api.cognitive.microsoft.com/spid/v1.0/identificationProfiles?entities=true, NSUnderlyingError=0x600002755290 {Error Domain=kCFErrorDomainCFNetwork Code=-1012 "(null)" UserInfo={_kCFURLErrorAuthFailedResponseKey=<NSHTTPURLResponse: 0x600002a746a0> { URL: https://westus.api.cognitive.microsoft.com/spid/v1.0/identificationProfiles?entities=true } { Status Code: 401, Headers { "Content-Length" = ( 225 ); "Content-Type" = ( "application/json" ); Date = ( "Tue, 23 Mar 2021 18:56:15 GMT" ); "Strict-Transport-Security" = ( "max-age=31536000; includeSubDomains; preload" ); "Www-Authenticate" = ( "AzureApiManagementKey realm=\"https://westus.api.cognitive.microsoft.com/spid/v1.0",name="Ocp-Apim-Subscription-Key",type="header""; ); "apim-request-id" = ( "5ab215e6-1efe-4f92-9468-3dc14a79567e" ); "x-content-type-options" = ( nosniff ); } }}}, NSErrorFailingURLKey=https://westus.api.cognitive.microsoft.com/spid/v1.0/identificationProfiles?entities=true}";

Implementation of my code

@implementation PersonIdObject

(int) personIdMethod {
NSLog(@"SomeMethod Ran");

 @autoreleasepool {
  NSString* path = @"https://westus.api.cognitive.microsoft.com/spid/v1.0/identificationProfiles";
  NSArray* array = @[
                       // Request parameters
                       @"entities=true",
                    ];

  NSString* string = [array componentsJoinedByString:@"&"];
  path = [path stringByAppendingFormat:@"?%@", string];
  NSLog(@"%@", path);
  NSMutableURLRequest* _request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:path]];
  [_request setHTTPMethod:@"POST"];
  // Request headers
  [_request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
  [_request setValue:@"{subscription key}" forHTTPHeaderField:@"sub_key"];
  // Request body
  [_request setHTTPBody:[@"{body}" dataUsingEncoding:NSUTF8StringEncoding]];

  NSURLResponse *response = nil;
  NSError *error = nil;
  NSData* _connectionData = [NSURLConnection sendSynchronousRequest:_request returningResponse:&response error:&error];
  if (nil != error)
  {
      NSLog(@"Error: %@", error);
  }
  else
  {
      NSError* error = nil;
      NSMutableDictionary* json = nil;
      NSString* dataString = [[NSString alloc] initWithData:_connectionData encoding:NSUTF8StringEncoding];
      NSLog(@"%@", dataString);

      if (nil != _connectionData)
      {
          json = [NSJSONSerialization JSONObjectWithData:_connectionData options:NSJSONReadingMutableContainers error:&error];
      }

      if (error || !json)
      {
          NSLog(@"Could not parse loaded json with error:%@", error);
      }

      NSLog(@"%@", json);
      _connectionData = nil;
  }

  //[pool drain];
  return 0;
  }

}