Forge server hangs on stop

My forge server doesn't quit when I run the stop command, it doesn't stop the server and end java, but remains for what seems to be a long time. I know it stops eventually but I don't know how long it takes. This is a problem because I want to run an autorestart mod and if the server never ends it can't restart. I'm running forge version 43.3.0 for 1.19.2 on Ubuntu 24.04. The modpack running on the server is this one:

https://www.curseforge.com/minecraft/modpacks/hazardousdaniels-unlimited

If this is a problem that I can solve by upgrading my forge version I'd love to do that, but I do not know how.

This is what the server hangs on, never going anywhere after the last line. I can end the process with ctrl+c there with no problems.

[28May2026 08:48:22.433] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Stopping the server
[28May2026 08:48:22.494] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Stopping server
[28May2026 08:48:22.498] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving players
[28May2026 08:48:22.499] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving worlds
[28May2026 08:48:22.509] [Physics thread/INFO] [Burger Factory/]: Deleting VSPhysicsPipelineStage resources!
[28May2026 08:48:22.528] [Physics thread/WARN] [org.valkyrienskies.core.impl.shadow.Ap/]: Physics pipeline ending
[28May2026 08:48:25.671] [DefaultDispatcher-worker-1/INFO] [Burger Factory/]: VSPhysicsPipelineStage is fully deleted!
[28May2026 08:48:26.455] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/minecraft:overworld
[28May2026 08:48:26.634] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/minecraft:the_nether
[28May2026 08:48:26.651] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/minecraft:the_end
[28May2026 08:48:26.656] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/twilightforest:twilight_forest
[28May2026 08:48:26.658] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/aether:the_aether
[28May2026 08:48:26.663] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: Saving chunks for level 'ServerLevel[Unimited modpack world]'/tropicraft:tropics
[28May2026 08:48:26.834] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (Unimited modpack world): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (twilight_forest): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (the_aether): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage (tropics): All chunks are saved
[28May2026 08:48:26.835] [Server thread/INFO] [net.minecraft.server.MinecraftServer/]: ThreadedAnvilChunkStorage: All dimensions are saved