plugin does not start

[Hiradpi]

17:43:15] [Server thread/ERROR]: Could not load 'plugins/Skuishy-2.7-all.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoSuchMethodError: 'net.md_5.bungee.api.ChatColor net.md_5.bungee.api.ChatColor.of(java.lang.String)'
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:133) ~[patched_1.8.8.jar:git-PaperSpigot-445]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:331) ~[patched_1.8.8.jar:git-PaperSpigot-445]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:254) [patched_1.8.8.jar:git-PaperSpigot-445]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:293) [patched_1.8.8.jar:git-PaperSpigot-445]
at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:202) [patched_1.8.8.jar:git-PaperSpigot-445]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:563) [patched_1.8.8.jar:git-PaperSpigot-445]
at java.lang.Thread.run(Thread.java:840) [?:?]
Caused by: java.lang.NoSuchMethodError: 'net.md_5.bungee.api.ChatColor net.md_5.bungee.api.ChatColor.of(java.lang.String)'
at lol.aabss.skuishy.Skuishy.(Skuishy.java:45) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:?]
at java.lang.Class.forName(Class.java:467) ~[?:?]
at org.bukkit.plugin.java.PluginClassLoader.(PluginClassLoader.java:65) ~[patched_1.8.8.jar:git-PaperSpigot-445]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:129) ~[patched_1.8.8.jar:git-PaperSpigot-445]
... 6 more

[aabssmc]

by chance, are you using paper 1.8