Not all chapters get uploaded onto batoto. It's possible that the previous group didn't even know of Batoto or they do not want it to be reupload to another site. But unfortunately, a lot of bot manga sites do upload them.
People get to choose whether or not they want a chapter of their projects to be uploaded.
Yeah, I don't know for sure if OP wants to upload that single chapter done by 801Uranus or are going to do the series themselves, but that group doesn't have an established policy with Batoto, nor is there any (that I see) on their site...
https://801uranus.tumblr.com/
So yeah, if the OP wants to, per Grumpy and Gen Hosting, "That means if you cannot find their policy, it is safe to assume they don't have a problem with us hosting their work." I think it should be fine to upload it.