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Skips Adding Config Even Though It's Required

See original GitHub issue

$ sudo linux-enable-ir-emitter configure 
[ INFO:0] global /builddir/build/BUILD/opencv-4.5.2/modules/videoio/src/videoio_registry.cpp (217) VideoBackendRegistry VIDEOIO: Enabled backends(9, sorted by priority): FFMPEG(1000); GSTREAMER(990); INTEL_MFX(980); MSMF(970); V4L2(960); CV_IMAGES(950); CV_MJPEG(940); FIREWIRE(930); UEYE(920)
[ INFO:0] global /builddir/build/BUILD/opencv-4.5.2/modules/videoio/src/cap_gstreamer.cpp (831) open OpenCV | GStreamer: v4l2src device=/dev/video2 ! videoconvert ! appsink drop=true
[ INFO:0] global /builddir/build/BUILD/opencv-4.5.2/modules/videoio/src/cap_gstreamer.cpp (864) open OpenCV | GStreamer: mode - MANUAL
[ WARN:0] global /builddir/build/BUILD/opencv-4.5.2/modules/videoio/src/cap_gstreamer.cpp (1081) open OpenCV | GStreamer warning: Cannot query video position: status=0, value=-1, duration=-1
Did you see the ir emitter flashing (not just turn on) ? Yes/No ? yes
ERROR: Your infrared camera is already working, skipping the configuration.

$ sudo linux-enable-ir-emitter test     
ERROR: No configuration is currently saved.
Traceback (most recent call last):
  File "/usr/bin/linux-enable-ir-emitter", line 83, in <module>
    test.execute()
  File "/usr/lib64/linux-enable-ir-emitter/command/test.py", line 12, in execute
    exitIfFileDescriptorError(exit_code, ir_config.device)
AttributeError: 'NoneType' object has no attribute 'device'