"invalid plugin.yml"

[wdstudios2]

I tried both the 1.8 version of this plugin with the 1.8 version of Craftbukkit, and the 1.16.4 version of the plugin with the 1.16.4 version of Craftbukkit; both yielded the same error:

[00:36:45 ERROR]: Could not load 'plugins\HungerStrike-1.16.3-4.1.0.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:158) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:144) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at org.bukkit.craftbukkit.v1_16_R3.CraftServer.loadPlugins(CraftServer.java:381) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:179) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:786) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$0(MinecraftServer.java:155) ~[craftbukkit-1.16.4.jar:git-Bukkit-3eb7236]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_301]
Caused by: java.io.FileNotFoundException: Jar does not contain plugin.yml

I could try other versions but I don't expect the results to be any different.