TileEntity

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

Try older builds of Connector

Make sure you put this file into the mods-folder: https://www.curseforge.com/minecraft/mc-mods/fabric-api/files/8443275 Referring to the log, this mod is not present

Maybe sodium addons can fix it - add https://www.curseforge.com/minecraft/mc-mods/sodium-options-api and https://www.curseforge.com/minecraft/mc-mods/dynamiclights-reforged

Does it work without Iris?

Make a test without the mod distraction_free_recipes - looks like it runs into a conflict with JEI Maybe EMI is required, too

Add the crash-report generated with using spark

Aah I think Forge just fixed this issue. With an amplifier of 125, you should get a huge amount of health, but Vanilla is limited. Bypassing this limit results in a negative value, which kills you. Forge probably added some functions to catch overflowing values, which I think is essential for modded content

Add the crash-report And which command do you use?

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

Make a test with another Launcher like MultiMC or AT Launcher

Text2speech is a client-side-only function - not a mod But a mod is using it which is not working on a server

Same issue without this mod?