I can’t get coordinates with GPS

Why is my app crashing when I try to get coordinates from GPS? If anything in the code, I marked the comment where the error crashes during startup.

public abstract class MainActivity extends FragmentActivity implements OnMapReadyCallback, LocationListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map); mapFragment.getMapAsync((OnMapReadyCallback) this); LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);// Вот тут приложение вылетает !!! lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); } public class coordinats{ public double Latitude; public double Longitude; } public void onLocationChanged(Location location) { if (location != null) { coordinats position = new coordinats(); position.Latitude = location.getLatitude(); position.Longitude = location.getLongitude(); new Gson().toJson(position); } } public void conect (View v){ Thread network = new Thread(new ClientThread()); network.start(); } private Socket socket; private static final int SERVERPORT = 1111; private static final String SERVER_IP = "1.23.45.67"; class ClientThread implements Runnable { @Override public void run() { try { InetAddress serverAddr = InetAddress.getByName(SERVER_IP); socket = new Socket(serverAddr, SERVERPORT); } catch (UnknownHostException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } } } public void onMapReady(GoogleMap map) { // Add a marker in Sydney, Australia, and move the camera. LatLng sydney = new LatLng(-34, 151); map.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney")); map.moveCamera(CameraUpdateFactory.newLatLng(sydney)); final LatLng MELBOURNE = new LatLng(-37.813, 144.962); Marker melbourne = map.addMarker(new MarkerOptions() .position(MELBOURNE) .title("Melbourne") .snippet("Population: 4,137,400") .icon(BitmapDescriptorFactory.fromResource(R.drawable.fingerbig))); 

--- UPD ---

 05-10 16:28:54.579 3967-3974/myhome.gps_tracker I/art: Debugger is active 05-10 16:28:54.590 3967-3967/myhome.gps_tracker I/System.out: Debugger has connected 05-10 16:28:54.590 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:54.800 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:55.010 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:55.220 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:55.429 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:55.640 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:55.849 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:56.059 3967-3967/myhome.gps_tracker I/System.out: waiting for debugger to settle... 05-10 16:28:56.269 3967-3967/myhome.gps_tracker I/System.out: debugger has settled (1431) 05-10 16:28:56.283 3967-3967/myhome.gps_tracker W/System: ClassLoader referenced unknown path: /data/app/myhome.gps_tracker-1/lib/x86 05-10 16:28:56.379 3967-3967/myhome.gps_tracker W/System: ClassLoader referenced unknown path: /data/app/myhome.gps_tracker-1/lib/x86 05-10 16:28:56.536 3967-4022/myhome.gps_tracker I/GMPM: App measurement is starting up 05-10 16:28:56.547 3967-4022/myhome.gps_tracker E/GMPM: getGoogleAppId failed with status: 10 05-10 16:28:56.547 3967-4022/myhome.gps_tracker E/GMPM: Uploading is not possible. App measurement disabled 05-10 16:28:56.551 3967-3967/myhome.gps_tracker D/AndroidRuntime: Shutting down VM 05-10 16:28:56.551 3967-3967/myhome.gps_tracker E/AndroidRuntime: FATAL EXCEPTION: main Process: myhome.gps_tracker, PID: 3967 java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{myhome.gps_tracker/myhome.gps_tracker.MainActivity}: java.lang.InstantiationException: java.lang.Class<myhome.gps_tracker.MainActivity> cannot be instantiated at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) Caused by: java.lang.InstantiationException: java.lang.Class<myhome.gps_tracker.MainActivity> cannot be instantiated at java.lang.Class.newInstance(Native Method) at android.app.Instrumentation.newActivity(Instrumentation.java:1067) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2317) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)