Can't upload a video

reversalmushroom
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).

You're gay.
It won’t let me upload this video: https://uploads.ungrounded.net/alternate/1146000/1146515_alternate_51726.1080p.mp4
 
For some reason says:
 
“Image can’t be blank  
Image size can’t be blank  
Image width can’t be blank  
Image height can’t be blank  
Image mime type (video/mp4) is invalid  
Image duration can’t be blank  
Image orig sha512 hash can’t be blank”
 
Why is it saying all these things are blank like I’m uploading nothing? It’s clearly a playable video that exists. How do I get it to upload?
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