Game crashes when loading a singleplayer world

[haykam821]

When using the Minecraft 1.21.10 version of Plasmid (69d9558), the game crashes immediately after trying to create a new singleplayer world or load an existing one:

java.lang.RuntimeException: Mixin transformation of net.minecraft.server.integrated.IntegratedPlayerManager failed
Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: Critical injection failure: Callback method canSavePlayerData(ZLnet/minecraft/server/network/ServerPlayerEntity;)Z in plasmid.client.mixins.json:game.space.IntegratedPlayerManagerMixin from mod plasmid failed injection check, (0/1) succeeded. Scanned 0 target(s). No refMap loaded.

Mixin verification tests would be useful for avoiding this class of issue.