[16:22:34] [Server thread/ERROR]: Could not load 'plugins\MythicMobs-2.5.1.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: MythicLib
        at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:222) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.craftbukkit.v1_10_R1.CraftServer.loadPlugins(CraftServer.java:292) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.craftbukkit.v1_10_R1.CraftServer.reload(CraftServer.java:774) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.Bukkit.reload(Bukkit.java:556) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:43) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:152) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.craftbukkit.v1_10_R1.CraftServer.dispatchCommand(CraftServer.java:665) [patched_1.10.2.jar:git-Paper-817]
        at org.bukkit.craftbukkit.v1_10_R1.CraftServer.dispatchServerCommand(CraftServer.java:628) [patched_1.10.2.jar:git-Paper-817]
        at net.minecraft.server.v1_10_R1.DedicatedServer.aL(DedicatedServer.java:442) [patched_1.10.2.jar:git-Paper-817]
        at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:405) [patched_1.10.2.jar:git-Paper-817]
        at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:725) [patched_1.10.2.jar:git-Paper-817]
        at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:624) [patched_1.10.2.jar:git-Paper-817]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
[16:22:34] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
报错，用不了

无法加载插件，你换个版本试试？是否需要前置插件支持？有没有去官网下载兼容1.10.2的版本？
请检查

楼主是否安装前置插件MythicLib？

MythicLib是啥插件，你弄个附件过来

这个楼主,如果可以希望给个采纳

好像之前那个 没带上附件?