server spigot 1.14.4 error


[12:14:02] [Server thread/ERROR]: Could not load 'plugins\Random-Effect-and-Item-1.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Unsupported API version 1.16
at org.bukkit.craftbukkit.v1_14_R1.util.CraftMagicNumbers.checkSupported(CraftMagicNumbers.java:261) ~[spigot.jar:git-Spigot-cbd1a1b-009d8af]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[spigot.jar:git-Spigot-cbd1a1b-009d8af]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:334) ~[spigot.jar:git-Spigot-cbd1a1b-009d8af]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:253) [spigot.jar:git-Spigot-cbd1a1b-009d8af]
at org.bukkit.craftbukkit.v1_14_R1.CraftServer.loadPlugins(CraftServer.java:350) [spigot.jar:git-Spigot-cbd1a1b-009d8af]
at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:202) [spigot.jar:git-Spigot-cbd1a1b-009d8af]
at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:775) [spigot.jar:git-Spigot-cbd1a1b-009d8af]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_281]