Issues with trying to start a server for big dig

[T10 Titan]

2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] MJ Power Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] BC Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] LP Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] CC Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] GregTech Integration Disabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] Factorization Integration Disabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] Mine Factory Reloaded Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] Better Storage Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] Universal Electricity Integration Enabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] IC Integration Disabled.
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] [AppEng] Forestry Integration Enabled.
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for electronicCircuit
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for advancedCircuit
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for iridiumPlate
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for energyCrystal
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] Universal Recipes: Error Registering calclavia:ADVANCED_BATTERY
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for reBattery
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for batBox
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] Universal Recipes: Error Registering calclavia:BATTERY_BOX
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for wrench
2026-01-05 01:00:40 [SEVERE] [ForgeModLoader] Universal Recipes: Error Registering calclavia:WRENCH
2026-01-05 01:00:40 [INFO] [STDOUT] IC2 API: Call getItem failed for generator
2026-01-05 01:00:40 [WARNING] [ForgeModLoader] Could not load forestry config, due to java reflection failing!
beeBreedingMode

These are the errors I get when I press the launch.bat I want to host a server of this mudpack for my friends, but it seems that using the official server downloader doesn't work. Would any of you know how to fix this issue?

 

[JaariAtmc]

You need to use an older version of Java. Some quick testing shows that Java 8u51 works, atleast. If you play the modpack itself and have Mojang Java Runtimes enabled, this version is used as well.