服务器自动崩溃，同时控制台出现：

    1. Encountered an unexpected exception
    2. net.minecraftforge.fml.common.DuplicateModsFoundException: 
    3. Duplicate Mods:
    4.     XXX : /publish/app/mc-docker/mc-1.12.2/server/./mods/xxx1.jar
    5.     XXX : /publish/app/mc-docker/mc-1.12.2/server/./mods/xxx2.jar
    8.     at net.minecraftforge.fml.common.Loader.identifyDuplicates(Loader.java:466) ~[Loader.class:?]
    9.     at net.minecraftforge.fml.common.Loader.identifyMods(Loader.java:428) ~[Loader.class:?]
    10.     at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:568) ~[Loader.class:?]
    11.     at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98) ~[FMLServerHandler.class:?]
    12.     at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333) ~[FMLCommonHandler.class:?]
    13.     at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125) ~[nz.class:?]
    14.     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486) [MinecraftServer.class:?]
    15.     at java.lang.Thread.run(Thread.java:823) [?:1.8.0_292]

    这说明你安装了两个一样的模组，请前往插件模组，在模组中卸载一个 XXX，然后重启服务器。