[11:20:12 ERROR]: Could not load 'plugins/selamla.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:178) ~[purpur-api-1.19-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:154) ~[purpur-api-1.19-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_19_R1.CraftServer.loadPlugins(CraftServer.java:419) ~[purpur-1.19.jar:git-Purpur-1670]
at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:313) ~[purpur-1.19.jar:git-Purpur-1670]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1137) ~[purpur-1.19.jar:git-Purpur-1670]
at net.minecraft.server.MinecraftServer.lambda$spin$1(MinecraftServer.java:307) ~[purpur-1.19.jar:git-Purpur-1670]
at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml
... 7 more
I'm learning to write Bukkit plugin but it gives this error code How can i solve this problem ?