Exception is server tick loop. Minecraft. How to fix?

[tralialia]

---- Minecraft Crash Report ----
// I let you down. Sorry :(

Time: 2024-01-18 15:13:15
Description: Exception in server tick loop

java.lang.IllegalStateException: Failed to initialize server
    at net.minecraft.server.MinecraftServer.w(SourceFile:699)
    at net.minecraft.server.MinecraftServer.a(SourceFile:270)
    at java.base/java.lang.Thread.run(Thread.java:842)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
    Minecraft Version: 1.20.4
    Minecraft Version ID: 1.20.4
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 17.0.10, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode, sharing), Oracle Corporation
    Memory: 596234240 bytes (568 MiB) / 772800512 bytes (737 MiB) up to 2122317824 bytes (2024 MiB)
    CPUs: 4
    Processor Vendor: GenuineIntel
    Processor Name: Intel(R) Core(TM) i5-4460  CPU @ 3.20GHz
    Identifier: Intel64 Family 6 Model 60 Stepping 3
    Microarchitecture: Haswell (Client)
    Frequency (GHz): 3.19
    Number of physical packages: 1
    Number of physical CPUs: 4
    Number of logical CPUs: 4
    Graphics card #0 name: Intel(R) HD Graphics 4600
    Graphics card #0 vendor: Intel Corporation (0x8086)
    Graphics card #0 VRAM (MB): 1024.00
    Graphics card #0 deviceId: 0x0412
    Graphics card #0 versionInfo: DriverVersion=20.19.15.4326
    Memory slot #0 capacity (MB): 4096.00
    Memory slot #0 clockSpeed (GHz): 1.60
    Memory slot #0 type: DDR3
    Memory slot #1 capacity (MB): 4096.00
    Memory slot #1 clockSpeed (GHz): 1.60
    Memory slot #1 type: DDR3
    Virtual memory max (MB): 12394.79
    Virtual memory used (MB): 6566.81
    Swap memory total (MB): 4305.13
    Swap memory used (MB): 94.91
    JVM Flags: 0 total; 
    Server Running: true
    Data Packs: vanilla
    Enabled Feature Flags: minecraft:vanilla
    World Generation: Stable
    Is Modded: Probably not. Server jar signature and brand is untouched
    Type: Dedicated Server (map_server.txt)

[Paint_Ninja]

That crash report doesn't seem to come from Forge. Have you installed the Forge server?

Please don't dump crash reports directly in the forums. Share a link to them on paste.ee instead, as explained in the FAQ.