Your video file is corrupted:
2018-09-14T21:47:48 MCEBuddy.AppWrapper.Handbrake → [NULL @ 000000000275ae20] missing picture in access unit
and you have hardware encoding enabled, so your graphics driver is unable to process it:
2018-09-14T21:48:04 MCEBuddy.AppWrapper.Handbrake → [h264_qsv @ 00000000026fece0] Error during QSV decoding.: incompatible video parameters (-14)
Your options are:
- Fix video file
- Update Intel graphics driver (see the Hardware FAQ page)
- Turn off hardware encoding in your conversion settings