(com.facebook.sdk.login error 304.) Error with FBSDK 4.2

I am trying to implement login with Facebook functionality, But I am getting following error in return.

Login Failed with error: The operation couldn’t be completed. (com.facebook.sdk.login error 304.)

Here is my Code

    - (void)loginWithFacebook {
        NSString *const read_actions = @"email";

        [[[FBSDKLoginManager alloc] init]
         logInWithReadPermissions:@[read_actions] handler:^(FBSDKLoginManagerLoginResult *result, NSError *error)
             if (error) {
                 NSLog(@"Login Failed with error: %@", error.localizedDescription);
             else if (result.isCancelled)
                 NSLog(@"Login Failed due to Cancel");
                 if ([result.grantedPermissions containsObject:read_actions]) {
                     NSLog(@"Permission granted");


Source: facebook

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