Export Failed

This is on the error log: 

- Source File: C:\Users\User\Desktop\New folder\Character Animator Project - Kisa 2\Character Animator Project - Kisa 2.chproj
- Output File: C:\Users\User\Desktop\New folder\Scene - Kisa.mp4
- Preset Used: Match Source - High bitrate
- Video:
- Audio:
- Bitrate:
- Encoding Time: 00:00:00
01/20/2022 01:10:01 PM : Encoding Failed
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Could not read from the source. Please check if it has moved or been deleted.

My computer is set up for animation so my memory isn't an issue. Nothing has changed since I updated it this morning. Now it won't export with the media encoder. Please help ASAP.