Failed to create server implementation. Please report this to the FoliaLib GitHub issues page. Forks of server software may not all be supported. If you are using an unofficial fork, please report this to the fork's developers first.

[nennneko5787]

It was displayed when LunaChat was made compatible with Folia. Here is the code: https://github.com/Earth2B2TMC/LunaChat/blob/master/src/main/java/com/github/ucchyocean/lc3/LunaChatBukkit.java

[11:52:53 ERROR]: Error occurred while enabling LunaChat v3.0.16 (Is it up to date?)
java.lang.IllegalStateException: Failed to create server implementation. Please report this to the FoliaLib GitHub issues page. Forks of server software may not all be supported. If you are using an unofficial fork, please report this to the fork's developers first.
        at com.tcoded.folialib.FoliaLib.<init>(FoliaLib.java:38) ~[LunaChat.jar:?]
        at com.github.ucchyocean.lc3.LunaChatBukkit.onEnable(LunaChatBukkit.java:77) ~[LunaChat.jar:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:287) ~[folia-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:188) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[folia-api-1.20.4-R0.1-SNAPSHOT.jar:?]
        at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugin(CraftServer.java:645) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at org.bukkit.craftbukkit.v1_20_R3.CraftServer.enablePlugins(CraftServer.java:556) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:713) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:458) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:309) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1217) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:346) ~[folia-1.20.4.jar:git-Folia-"25ee657"]
        at java.lang.Thread.run(Thread.java:840) ~[?:?]