[21:07:42 INFO]: Starting minecraft server version 1.15.2
[21:07:42 INFO]: Loading properties
[21:07:43 INFO]: This server is running CraftBukkit version git-Spigot-800b93f-8160e29 (MC: 1.15.2) (Implementing API version 1.15.2-R0.1-SNAPSHOT)
[21:07:43 INFO]: Debug logging is disabled
[21:07:43 INFO]: Server Ping Player Sample Count: 12
[21:07:43 INFO]: Using 4 threads for Netty based IO
[21:07:43 INFO]: Default game type: SURVIVAL
[21:07:43 INFO]: Generating keypair
[21:07:44 INFO]: Starting Minecraft server on 127.0.0.1:25565
[21:07:44 INFO]: Using default channel type
[21:07:51 ERROR]: Could not load 'plugins\Protector.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: Unsupported API version 1.15.2
	at org.bukkit.craftbukkit.v1_15_R1.util.CraftMagicNumbers.checkSupported(CraftMagicNumbers.java:261) ~[paper.jar:git-Spigot-800b93f-8160e29]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[paper.jar:git-Spigot-800b93f-8160e29]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:334) ~[paper.jar:git-Spigot-800b93f-8160e29]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:253) [paper.jar:git-Spigot-800b93f-8160e29]
	at org.bukkit.craftbukkit.v1_15_R1.CraftServer.loadPlugins(CraftServer.java:351) [paper.jar:git-Spigot-800b93f-8160e29]
	at net.minecraft.server.v1_15_R1.DedicatedServer.init(DedicatedServer.java:203) [paper.jar:git-Spigot-800b93f-8160e29]
	at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:784) [paper.jar:git-Spigot-800b93f-8160e29]