[21:58:36 ERROR]: com/fasterxml/jackson/core/JsonGenerator initializing MyPet v3.2 (Is it up to date?)
java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonGenerator
        at de.Keyle.MyPet.util.sentry.DefaultSentryClientFactory.createJsonMarshaller(DefaultSentryClientFactory.java:494) ~[?:?]
        at de.Keyle.MyPet.util.sentry.DefaultSentryClientFactory.createMarshaller(DefaultSentryClientFactory.java:462) ~[?:?]
        at de.Keyle.MyPet.util.sentry.DefaultSentryClientFactory.createHttpConnection(DefaultSentryClientFactory.java:427) ~[?:?]
        at de.Keyle.MyPet.util.sentry.DefaultSentryClientFactory.createConnection(DefaultSentryClientFactory.java:327) ~[?:?]
        at de.Keyle.MyPet.util.sentry.DefaultSentryClientFactory.createSentryClient(DefaultSentryClientFactory.java:236) ~[?:?]
        at de.Keyle.MyPet.util.sentry.SentryClientFactory.sentryClient(SentryClientFactory.java:64) ~[?:?]
        at de.Keyle.MyPet.util.sentry.SentryClientFactory.sentryClient(SentryClientFactory.java:31) ~[?:?]
        at de.Keyle.MyPet.util.SentryErrorReporter.onEnable(SentryErrorReporter.java:54) ~[?:?]
        at de.Keyle.MyPet.MyPetPlugin.onLoad(MyPetPlugin.java:139) ~[?:?]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.loadPlugins(CraftServer.java:330) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.init(DedicatedServer.java:213) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:698) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_211]
Caused by: java.lang.ClassNotFoundException: com.fasterxml.jackson.core.JsonGenerator
        at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_211]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:136) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:82) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_211]
        at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_211]
        ... 13 more