"Unable to deserialize blocks for chunk section" Game crashes reliably 5 minutes after loading in

My game world crashed once due to trying to move a large litematica blueprint, after reloading the game the world will crash without fail after a few minutes. The performance is good (80fps) without stuttering and the crash is very sudden. Final console logs after crash read "Unable to deserialize blocks for chunk section [XX] [XX]" several dozen times. I tried reinstalling DH and deleting all the mod files in the world as suggested in #faq-start-here . Issue persists. I'd appreciate any help. Thanks in advance
1 Reply
Puhpine
Puhpine2mo ago
The deserilization warning is probably not related to the crash. It is happening because Mojang changed the name of minecraft:grass to minecraft:short_grass. To get rid of this, the easiest would be to delete your LOD database, the SQLite files. For the crash: try to find the smallest list of mods that let you reproduce the issue. I'm not very good at reading crash reports, and the problem may or may not be related to iris.
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