How to connect to localhost from iPhone on Mac OS

I read a lot of questions about it and still have the problem.

When I use localhost and correct the NSAppTransportSecurity optinos from the emulator , everything is correct.

Right now, I'm using my iPhone to debug. Both iPhone and Mac are connected to the same network.

I checked the IP address of my mac

I add it to NSAppTransportSecurity like this:

  <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSExceptionDomains</key>
        <dict>
            <key>10.250.x.x</key>
            <dict>
                <key>NSIncludesSubdomains</key>
                <true/>
                <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
                <true/>
                <key>NSTemporaryExceptionMinimumTLSVersion</key>
                <string>TLSv1.1</string>
            </dict>
        </dict>
    </dict>

I still get the error:

 App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file.
error = Error Domain=NSURLErrorDomain Code=-1022 "The resource could not be loaded because the App Transport Security policy requires the use of a secure connection." UserInfo={NSUnderlyingError=0x7f904d300170 {Error Domain=kCFErrorDomainCFNetwork Code=-1022 "(null)"}, NSErrorFailingURLStringKey=http://10.250.x.x:8080/IVRServer/api/registration/register, NSErrorFailingURLKey=http://10.250.x.x:8080/IVRServer/api/registration/register, NSLocalizedDescription=The resource could not be loaded because the App Transport Security policy requires the use of a secure connection.}

Should I add something else to my list?

Please don't consider repeating this question because I already have the correct settings in my plist and it works fine, but just when I change the server to non-localhost it doesn't work

What am I missing?