int android.util.Size.getWidth()' on a null object reference

[NoumanChughtai]

Attempt to invoke virtual method 'int android.util.Size.getWidth()' on a null object reference
at codingwithmitch.com.tabiancustomcamera.Camera2Fragment.createCameraPreviewSession(Camera2Fragment.java:1040)
at codingwithmitch.com.tabiancustomcamera.Camera2Fragment.access$1900(Camera2Fragment.java:84)
at codingwithmitch.com.tabiancustomcamera.Camera2Fragment$7.onOpened(Camera2Fragment.java:1008)
at android.hardware.camera2.impl.CameraDeviceImpl$1.run(CameraDeviceImpl.java:148)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:214)
at android.os.HandlerThread.run(HandlerThread.java:65)