Could not load 'plugins/ReportSystem.jar' in folder 'plugins'

org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml

at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:159) ~[patched_1.14.4.jar:git-Paper-135]

at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:142) ~[patched_1.14.4.jar:git-Paper-135]

at org.bukkit.craftbukkit.v1_14_R1.CraftServer.loadPlugins(CraftServer.java:355) ~[patched_1.14.4.jar:git-Paper-135]

at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:218) ~[patched_1.14.4.jar:git-Paper-135]

at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:871) ~[patched_1.14.4.jar:git-Paper-135]

at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]

Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml