"this image has been uplaoded before" but it hasn't

Ayvie
Helpful Owl - Drew someone's OC for the 2018 Community Collab
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -

I want to upload two images following each other, but after uploading the first part, I can’t upload the second one because apparently “this image has been uplaoded before”, but when redirecting me to the “original image”, it gets me back..on the first part. How should I do to upload it even tho it doesn’t exist on the site ?
 
first part/original image: https://derpibooru.org/1383118  
error message: https://puu.sh/uBASn/07c668e363.png
Mildgyth
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Senior Moderator
Humata, Hukhta, Hvarshta
@Harry
 
As far as i can tell, this often happens with tumblr images when people upload the page link and the page has more than one image; i don’t know what causes this, but i think you should be fine to upload now.
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