upgraded server to Neat-1.8-31 but get a crash during load.

Error: Caused by: java.lang.IllegalArgumentException: The specified resource 'neat.mixins.json' was invalid or could not be read

Minecraft: 1.18.2
Forge: forge-1.18.2-40.1.54
Neat: Neat-1.8-31.jar
Modpack: https://www.curseforge.com/minecraft/modpacks/the-lighthouse/files/3859356

Server Log: https://pastebin.com/s9WDt9KG

there is no crash log, and Latest and Debug stop with no further text as soon as Neat loads.

Same here, downgrading to 1.8-30 let my modpack load again.

well, whatever the problem was, it seems to have been rectified, through a combination of updating this and other mods. so, gg team. :D