Media Encoder keeps "failing" my files

I am running Media Encoder on Windows 10 and it has only allowed me to encode 1 file. Any other files i place inside the encoder fails. All of the footage has the exact same specs. Ironically i can keep uploading that one file and it will encode it every time without any issues. I need to know why I can not encode my MP4 files that i shot with my Canon 7D Mark II and trying to encode them as h.264 YouTube HD 1080P 29.97. Im using that preset because Premiere Pro will not just take my files straight from the Canon 7D Mark II. Is anyone familiar with this issue? Please Help. I need to know how to format files without losing quality.