Port page mini graphs not showing when browsing with hostname

i recently setup a dns name for my librenms server (e.g. http://librenms.some.domain:8668) and since switching to using that to access libre the ports page isn’t showing the mini graphs. when browsing the same page via ip ( the graphs DO show …

when checking graph image links in the broken situation (using hostname) the links are all hostname-based except on the ports page it uses the internal IP url.

e.g. overall traffic image link on device overview page:

mini graph image link on ports page: