Server keeps crashing

[DiDDiT]

Here is the directory:

04.05 15:12:25 [Multicraft] Loading server properties
04.05 15:12:25 [Multicraft] Starting server!
04.05 15:12:25 [Multicraft] Loaded config for "Custom JAR (Place "custom.jar" in base directory)"
04.05 15:12:31 [Multicraft] Updating eula.txt file
04.05 15:12:34 [Server] INFO 2021-05-04 15:12:34,385 main WARN Disabling terminal, you're running in an unsupported environment.
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLServerTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLServerTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLServerTweaker
04.05 15:12:34 [Server] main/INFO [FML]: Forge Mod Loader version 14.23.5.2855 for Minecraft 1.12.2 loading
04.05 15:12:34 [Server] main/INFO [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_211, running on Linux:amd64:4.19.0-8-amd64, installed at /usr/local/oracle-java-8/jdk1.8.0_211/jre
04.05 15:12:34 [Server] main/INFO [FML]: Searching /./mods for mods
04.05 15:12:34 [Server] main/WARN [FML]: Found FMLCorePluginContainsFMLMod marker in Forgelin-1.8.4.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
04.05 15:12:34 [Server] main/WARN [FML]: The coremod net.shadowfacts.forgelin.preloader.ForgelinPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
04.05 15:12:34 [Server] main/WARN [FML]: The coremod ForgelinPlugin (net.shadowfacts.forgelin.preloader.ForgelinPlugin) is not signed!
04.05 15:12:34 [Server] main/WARN [FML]: Found FMLCorePluginContainsFMLMod marker in librarianlib-1.12.2-4.22.jar. This is not recommended, @Mods should be in a separate jar from the coremod.
04.05 15:12:34 [Server] main/WARN [FML]: The coremod com.teamwizardry.librarianlib.asm.LibLibCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
04.05 15:12:34 [Server] main/WARN [FML]: The coremod LibrarianLib Plugin (com.teamwizardry.librarianlib.asm.LibLibCorePlugin) is not signed!
04.05 15:12:34 [Server] main/INFO [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.12.2_HD_U_G5.jar
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
04.05 15:12:34 [Server] main/INFO [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: acceptOptions
04.05 15:12:34 [Server] main/INFO [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: Forge server detected, skipping class transformer
04.05 15:12:34 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
04.05 15:12:36 [Server] main/INFO [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
04.05 15:12:36 [Server] main/INFO [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
04.05 15:12:36 [Server] main/INFO [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: getLaunchArguments
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Transforming World
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Applying Transformation to method (Names [updateEntities, func_72939_s] Descriptor ()V)
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Attempting to insert: Update hook
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Patch result: Success
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Applying Transformation to method (Names [updateEntityWithOptionalForce, func_72866_a] Descriptor (Lnet/minecraft/entity/Entity;Z)V)
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Attempting to insert: Update hook
04.05 15:12:36 [Server] main/INFO [LibrarianLib ASM]: Patch result: Success
04.05 15:12:37 [Server] main/INFO [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.server.MinecraftServer}
04.05 15:12:40 [Server] Server thread/INFO [minecraft/DedicatedServer]: Starting minecraft server version 1.12.2
04.05 15:12:40 [Server] Server thread/INFO [FML]: MinecraftForge v14.23.5.2855 Initialized
04.05 15:12:40 [Server] Server thread/INFO [FML]: Starts to replace vanilla recipe ingredients with ore ingredients.
04.05 15:12:40 [Server] Server thread/INFO [FML]: Invalid recipe found with multiple oredict ingredients in the same ingredient...
04.05 15:12:40 [Server] Server thread/INFO [FML]: Replaced 1227 ore ingredients
04.05 15:12:41 [Server] Server thread/INFO [FML]: Searching /./mods for mods
04.05 15:12:41 [Server] Server thread/WARN [FML]: Mod fancymenu is missing the required element 'version' and a version.properties file could not be found. Falling back to metadata version 1.5.2
04.05 15:12:42 [Server] Server thread/WARN [FML]: Mod ironchest is missing the required element 'version' and a version.properties file could not be found. Falling back to metadata version 1.12.2-7.0.67.844
04.05 15:12:42 [Server] Server thread/WARN [FML]: Mod konkrete is missing the required element 'version' and a version.properties file could not be found. Falling back to metadata version 1.0.3
04.05 15:12:44 [Server] Server thread/INFO [FML]: Forge Mod Loader has identified 36 mods to load
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for FML: assets/fml/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for bop_patch: assets/bop_patch/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for fancymenu: assets/fancymenu/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for forgelin: assets/forgelin/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for konkrete: assets/konkrete/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for librarianliblate: assets/librarianliblate/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for mantle: assets/mantle/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/WARN [FML]: Missing English translation for pixelextras: assets/pixelextras/lang/en_us.lang
04.05 15:12:44 [Server] Server thread/FATAL [FML]: net.minecraftforge.fml.common.MissingModsException: Mod unuparts (UNU Parts Pack) requires [mts@[19.15.4,)]
04.05 15:12:44 [Server] Server thread/ERROR [minecraft/MinecraftServer]: Encountered an unexpected exception
04.05 15:12:44 [Server] INFO net.minecraftforge.fml.common.MissingModsException: Mod unuparts (UNU Parts Pack) requires [mts@[19.15.4,)]
04.05 15:12:44 [Server] INFO at net.minecraftforge.fml.common.Loader.sortModList(Loader.java:266) ~[Loader.class:?]
04.05 15:12:44 [Server] INFO at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:572) ~[Loader.class:?]
04.05 15:12:44 [Server] INFO at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98) ~[FMLServerHandler.class:?]
04.05 15:12:44 [Server] INFO at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333) ~[FMLCommonHandler.class:?]
04.05 15:12:44 [Server] INFO at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125) ~[nz.class:?]
04.05 15:12:44 [Server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?]
04.05 15:12:44 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_211]
04.05 15:12:44 [Server] Server thread/ERROR [minecraft/MinecraftServer]: This crash report has been saved to: /./crash-reports/crash-2021-05-04_15.12.44-server.txt
04.05 15:12:44 [Server] Server thread/INFO [minecraft/MinecraftServer]: Stopping server
04.05 15:12:44 [Server] Server thread/INFO [minecraft/MinecraftServer]: Saving worlds
04.05 15:12:44 [Server] Server thread/INFO [FML]: The state engine was in incorrect state CONSTRUCTING and forced into state SERVER_STOPPED. Errors may have been discarded.
04.05 15:12:44 [Server] Server Shutdown Thread/INFO [minecraft/MinecraftServer]: Stopping server
04.05 15:12:44 [Server] Server Shutdown Thread/INFO [minecraft/MinecraftServer]: Saving worlds
04.05 15:12:44 [Multicraft] Server shut down (starting)
04.05 15:12:44 [Multicraft] Restarting crashed server in 10 seconds
04.05 15:12:44 [Multicraft] Server stopped

If you can help me with this I will be forever in your debt.