21.09 11:47:18 [Server] Startup [09:47:18 ERROR]: Fatal error trying to convert BookShelf v4.0.1:me/MitchT/BookShelf/BookListener.class
21.09 11:47:18 [Server] INFO org.bukkit.plugin.AuthorNagException: No legacy enum constant for WRITABLE_BOOK. Did you forget to define api-version: 1.13 in your plugin.yml?
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.v1_14_R1.util.Commodore$1$1.visitFieldInsn(Commodore.java:294) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.libs.org.objectweb.asm.ClassReader.readCode(ClassReader.java:2210) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.libs.org.objectweb.asm.ClassReader.readMethod(ClassReader.java:1283) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.libs.org.objectweb.asm.ClassReader.accept(ClassReader.java:688) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.libs.org.objectweb.asm.ClassReader.accept(ClassReader.java:400) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.v1_14_R1.util.Commodore.convert(Commodore.java:173) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.v1_14_R1.util.CraftMagicNumbers.processClass(CraftMagicNumbers.java:283) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:112) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.getClassByName(JavaPluginLoader.java:201) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:96) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:85) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_111]
21.09 11:47:18 [Server] INFO at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_111]
21.09 11:47:18 [Server] INFO at me.MitchT.BookShelf.BookShelfPlugin.onEnable(BookShelfPlugin.java:102) ~[?:?]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:338) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:420) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugin(CraftServer.java:467) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at org.bukkit.craftbukkit.v1_14_R1.CraftServer.enablePlugins(CraftServer.java:381) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:474) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at net.minecraft.server.v1_14_R1.DedicatedServer.init(DedicatedServer.java:290) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:870) ~[patched_1.14.4.jar:git-Paper-175]
21.09 11:47:18 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.8.0_111]