Error_Log

12-15 13:36:44.335 20013-20111/com.example.yankee.cw W/sinch-android-rtc: webrtc: (webrtcvoiceengine.cc:1295): webrtc: (rtp_packet_history.cc:41): Purging packet history in order to re-set status.
12-15 13:36:45.361 20013-20013/com.example.yankee.cw D/Call: onSessionEstablished: e21ed263-6c38-412f-b69c-985116925192: SessionDetails [startTime=1481789192, endTime=0, progressTime=1481789203, establishTime=1481789205, terminationCause=NONE, packetsSent=0, packetsReceived=0, error=null]
12-15 13:36:45.361 20013-20013/com.example.yankee.cw D/CallScreenActivity: Call established
12-15 13:36:45.381 20013-20111/com.example.yankee.cw W/AudioDeviceTemplate: The application should use MODE_IN_COMMUNICATION audio mode!
12-15 13:36:45.383 20013-20013/com.example.yankee.cw D/CallScreenActivity: Call offered video: true
12-15 13:36:45.467 20013-20013/com.example.yankee.cw D/CallScreenActivity: Video track added
12-15 13:36:45.514 20013-20013/com.example.yankee.cw D/VideoCapturerAndroid: VideoCapturerAndroid::surfaceCreated
12-15 13:36:45.675 20013-20111/com.example.yankee.cw D/VideoCapturerAndroid: stopCapture
12-15 13:36:45.676 20013-20387/com.example.yankee.cw D/VideoCapturerAndroid: stopCaptureOnCameraThread
12-15 13:36:45.676 20013-20387/com.example.yankee.cw D/VideoCapturerAndroid: Stop preview.
12-15 13:36:45.710 20013-20387/com.example.yankee.cw D/VideoCapturerAndroid: stopReturnBuffersToCamera called. All buffers have been returned.
12-15 13:36:45.710 20013-20387/com.example.yankee.cw D/Camera: app passed NULL surface
12-15 13:36:45.716 20013-20387/com.example.yankee.cw D/VideoCapturerAndroid: Release camera.
12-15 13:36:45.743 20013-20111/com.example.yankee.cw D/VideoCapturerAndroid: stopCapture done
12-15 13:36:45.743 20013-20013/com.example.yankee.cw D/VideoCapturerAndroid: VideoCapturerAndroid::surfaceChanged ignored: 4: 300x400
12-15 13:36:45.795 20013-20013/com.example.yankee.cw D/AndroidRuntime: Shutting down VM
12-15 13:36:45.804 20013-20110/com.example.yankee.cw D/VideoRendererGui: VideoRendererGui.onSurfaceCreated
12-15 13:36:45.805 20013-20110/com.example.yankee.cw D/VideoRendererGui: VideoRendererGui EGL Context: android.opengl.EGLContext@2271908e
12-15 13:36:45.807 20013-20110/com.example.yankee.cw D/VideoRendererGui:   YuvImageRenderer.createTextures 0 on GL thread:3859
12-15 13:36:45.813 20013-20013/com.example.yankee.cw E/AndroidRuntime: FATAL EXCEPTION: main
                                                                       Process: com.example.yankee.cw, PID: 20013
                                                                       Theme: themes:{default=overlay:jahirfiquitiva.themes.meliornui, iconPack:system, fontPkg:jahirfiquitiva.themes.meliornui, com.android.systemui=overlay:jahirfiquitiva.themes.meliornui, com.android.systemui.navbar=overlay:jahirfiquitiva.themes.meliornui}
                                                                       java.lang.NullPointerException: Attempt to read from field 'int org.webrtc.CameraEnumerationAndroid$CaptureFormat.width' on a null object reference
                                                                           at org.webrtc.VideoCapturerAndroid.setCameraPreviewSize(VideoCapturerAndroid.java:872)
                                                                           at org.webrtc.VideoCapturerAndroid.access$1400(VideoCapturerAndroid.java:76)
                                                                           at org.webrtc.VideoCapturerAndroid$9.run(VideoCapturerAndroid.java:824)
                                                                           at android.os.Handler.handleCallback(Handler.java:739)
                                                                           at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                           at android.os.Looper.loop(Looper.java:148)
                                                                           at android.app.ActivityThread.main(ActivityThread.java:5471)
                                                                           at java.lang.reflect.Method.invoke(Native Method)
                                                                           at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                           at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-15 13:36:45.819 20013-20110/com.example.yankee.cw D/VideoRendererGui: VideoRendererGui.onSurfaceChanged: 720 x 681  
12-15 13:36:45.819 20013-20110/com.example.yankee.cw D/VideoRendererGui: ID: 0. YuvImageRenderer.setScreenSize: 720 x 681
12-15 13:36:45.820 20013-20488/com.example.yankee.cw W/System: ClassLoader referenced unknown path: /system/framework/tcmclient.jar