TileEntity

Check the mods folder for such a mod

And without rltweaker?

Make a test without snifferplus - may refer to a conflict with the mod Fusion trying to render such a sniffer

You can try to remove the Farming Station block from the world with an NBT Editor The location is mentioned - here in this case: -- Block entity being ticked -- Details: Name: enderio:tile_farm_station // crazypants.enderio.machines.machine.farm.TileFarmStation Block type: ID #1533 (tile.block_farm_station // crazypants.enderio.machines.machine.farm.BlockFarmStation // enderio:block_farm_station) Block data value: 0 / 0x0 / 0b0000 Block location: World: (439,86,422), Chunk: (at 7,5,6 in 27,26; contains blocks 432,0,416 to 447,255,431), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511) The block_farm_station is at 439,86,422 in the region file r.0.0.mca Check your own crash for coords and region file If you have further issues, create an own thread for it with the full crash-report etc

Make a test with adding this mod: https://www.curseforge.com/minecraft/mc-mods/randompatches-forge/files/all?page=1&pageSize=20&version=1.12.2&showAlphaFiles=show

Also add the latest.log

Maybe an issue with the mod ancient_remnants-1.0.2.2.jar - make a test without it

hmm I have no idea

I am not sure but if (level.isClientSide()) { ... } here always return false (singleplayer is some kind of local server) - so this is used for client-thread stuff like changing GUIs or working with effects So this code block is completely ignored - to make sure, test it with LOGGER.info() lines or System.out.println() So if I am correct, just unwrap it from the if (level.isClientSide()) { ... } check

Also make a test without supermartijn642corelib and the mods requiring it

Maybe an issue with the mod vanillabackport

The "Missing mods.toml file" errors are not related to crashes - add the full log or crash-report with sites like https://mclo.gs/

Remove the mod alltheleaks

Removing random mods or half of the mods may break an existing world ...

Add the new crash-report

Remove the mod distraction_free_recipes

You can do this without any mods: At the center of your spawn, use /setworldspawn then /gamerule spawnRadius 0 So the player spawn will be at this location To protect this area, change the spawn-protection value in the server.properties Default is 16 blocks - so an area of 33x33 blocks (one spawn block plus 16 blocks in each direction) is protected based on your worldspawn - just increase the number to protect a larger area

Make a test without sodiumdynamiclights

Does the vanilla server use the same Java version and port?

Something on your system is blocking the connection (Firewall/Antivirus or similar)

Add the client/server log with sites like https://mclo.gs/

Yes - not all mods are working on a server (client-side-only mods) - shader mods, minimaps, mods making HUD changes etc

Just check for trending modpacks Maybe ATM9 https://www.curseforge.com/minecraft/modpacks/all-the-mods-9/files/7097953

Same issue Maybe switch to a pre-configured modpack - most of these already have a serverpack Use such a modpack as working base and add some mods

Just replace Connector with this build: https://www.curseforge.com/minecraft/mc-mods/sinytra-connector/files/5761411