Can not advance turn due to War Resolution not rendering. I've reloaded save same issue it appears this is due to a grievance related to religion and enacting ANY  Irreligion civics. My save has the civic Atheism enacted, revoking does not correct the issue. Replaying from oldest autosave does not correct issue. Well off to start a new game since my empire crumbled do to decision paralysis.

Current Save: Japanese.ctr
oldest save: auto-save 1279.ctr

My best guess is the list/array containing the grievances value/references are null where the religion grievance is stored. This causes the war resolution/grievance component to barf and throw an error most likely spamming the console logs.