So if I make an infobox with cooridinates that link to a map, the infobox is rendered really wide.
Topic on Project:Support desk
The wiki seems to be missing the Module:Coordinates and/or Scribunto extension.
I would say it is more likely you are missing the GeoData extension. It's not clear to me whether "Solr" is required for that extension; if so, you could be in for a lot of work setting that up.
Alternatively, you could alter the infobox template (or module, if it is generated by Scribunto) to simply not output {{#coordinates}}
data.
Ah!, yes, I though that was a scribunto module, but it's not. So yeah, you seem to be missing that GeoData extension