Catch exceptions when not waiting for preview on UI thread.

                        }

                        function.call();

                    }

                    catch(CameraAccessException e) {

                    catch(CameraAccessException | NullPointerException | IllegalArgumentException e) {

                        // see notes below in createCaptureSession() for why we also catch NullPointerException and IllegalArgumentException

                        // need to catch separately when wait_until_started==false due to this running on a background thread

                        Log.e(TAG, "exception create extension session on background thread");

                        e.printStackTrace();

                        //myStateCallback.onConfigureFailed();