Literally just a single null check.
Ars Nouveau's DocItemTooltipHandler crashes your client if it receives a null. Some Fluxnautics blocks end up feeding a null to DocItemTooltipHandler.
Thus, this mixin implements a simple null check. It no longer kills your client, and the offending fluxnautics blocks become usable again.
This is very much just a bandaid fix, and does not address the root cause, that being the buggy behaviour of some fluxnautics blocks. It only prevents a crash.
Fluxnautics - Ars Nouveau Compat Team
