New MobArena 1.12 error

> [03:00:20 ERROR]: Could not load 'plugins/MobArena.jar' in folder 'plugins'
org.bukkit.plugin.InvalidDescriptionException: Invalid plugin.yml
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:158) ~[patched_1.12.2.jar:git-Paper-1421]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:136) [patched_1.12.2.jar:git-Paper-1421]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.loadPlugins(CraftServer.java:318) [patched_1.12.2.jar:git-Paper-1421]
at net.minecraft.server.v1_12_R1.DedicatedServer.init(DedicatedServer.java:226) [patched_1.12.2.jar:git-Paper-1421]
at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:616) [patched_1.12.2.jar:git-Paper-1421]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_161]
Caused by: java.util.zip.ZipException: error in opening zip file
at java.util.zip.ZipFile.open(Native Method) ~[?:1.8.0_161]
at java.util.zip.ZipFile.<init>(ZipFile.java:225) ~[?:1.8.0_161]
at java.util.zip.ZipFile.<init>(ZipFile.java:155) ~[?:1.8.0_161]
at java.util.jar.JarFile.<init>(JarFile.java:166) ~[?:1.8.0_161]
at java.util.jar.JarFile.<init>(JarFile.java:130) ~[?:1.8.0_161]
at org.bukkit.plugin.java.JavaPluginLoader.getPluginDescription(JavaPluginLoader.java:146) ~[patched_1.12.2.jar:git-Paper-1421]
... 5 more
> [03:00:20 INFO]: Set PluginClassLoader as parallel capable
> [03:00:21 INFO]: [ES] : USENCP = true
> [03:00:21 INFO]: [ES] : AUTOSIGN_TYPE = BLOCKPLACE_AUTOSIGN
> [03:00:21 INFO]: [github.scarsz.discordsrv.dependencies.reflections.Reflections] Reflections took 117 ms to scan 12 urls, producing 13 keys and 21 values