Media Encoder Fails to finish endoing my video

I've put together a mix of songs with a graphic for a friends birthday, but whenever i run encoder it fails to finish. using the PresetYouTube Full HD 1080P. iove run it twice and it doesnt render properly. the video cuts out about 30 mins into the 3hr clip. i noticed in the log it says interrupted by user, but i never touched it. i have atatched the error log to this post