I've been experiencing random crashes here and there on Fabric 1.19.2, with Minecraft returning a NullPointerException error. Someone from the Fabric Project Discord Server suggested it may have something to do with PortingLib, which is included with FogLooksGoodNow. They suggested that there may have not been a nullcheck with a temporary mixin variable, and that I should make an issue report about it. I've included the crash report in question that was used to deduce the problem:
crashlog.txt

Please ignore this report. I made the dumb mistake of mixing up the Forge version of FogsLookGoodNow with the Fabric version and accidentally sent a report to the wrong github page. I will be closing this report. Apologies for the troubles.