That div isn't doing anything so I don't know why it's even there.
Beside its terrible name
<div class="the-container-that-stops-the-infobox-from-screwing-up-the-page-because-fandom-is-evil">
there is no rule for this class in any css file.
You should just remove it, it doesn't make any sense.
The two closing curly brackets after the category should also not be there:
</group>
[[Category:Peoples]]}}</infobox></div></onlyinclude>
And finally, the category should not be inside the infobox code, but after the infobox, inside "includeonly" tags, like:
</group>
</infobox><includeonly>[[Category:Peoples]]</includeonly></onlyinclude>
Link for reference, since we still don't have one:
https://sense-of-right-alliance.fandom.com/wiki/Template:Infobox_Character
