error

[20:13:17 ERROR]: [DiscordIntegration] This is not an error of MCCoroutine! See sub exception for details.
com.dominikkorsa.discordintegration.exception.MessageNotSetException: Field failed-to-connect not set in messages.yml
        at com.dominikkorsa.discordintegration.config.MessageManager.getString(MessageManager.kt:19) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.config.MessageManager.getFailedToConnect(MessageManager.kt:27) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration.connect(DiscordIntegration.kt:71) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration.connect(DiscordIntegration.kt:56) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration.access$connect(DiscordIntegration.kt:30) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration$onEnable$1.invokeSuspend(DiscordIntegration.kt:45) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration$onEnable$1.invoke(DiscordIntegration.kt) ~[discord-integration-2.1.0-all.jar:?]
        at com.dominikkorsa.discordintegration.DiscordIntegration$onEnable$1.invoke(DiscordIntegration.kt) ~[discord-integration-2.1.0-all.jar:?]
        at com.github.shynixn.mccoroutine.service.CoroutineSessionImpl$launchInternal$1$1.invokeSuspend(CoroutineSessionImpl.kt:99) ~[discord-integration-2.1.0-all.jar:?]
        at com.github.shynixn.mccoroutine.service.CoroutineSessionImpl$launchInternal$1$1.invoke(CoroutineSessionImpl.kt) ~[discord-integration-2.1.0-all.jar:?]
        at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89) ~[discord-integration-2.1.0-all.jar:?]
        at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264) ~[discord-integration-2.1.0-all.jar:?]
        at com.github.shynixn.mccoroutine.service.CoroutineSessionImpl$launchInternal$1.invokeSuspend(CoroutineSessionImpl.kt:98) [discord-integration-2.1.0-all.jar:?]
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) [discord-integration-2.1.0-all.jar:?]
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106) [discord-integration-2.1.0-all.jar:?]
        at org.bukkit.craftbukkit.v1_17_R1.scheduler.CraftTask.run(CraftTask.java:101) [patched_1.17.1.jar:git-Paper-196]
        at org.bukkit.craftbukkit.v1_17_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:54) [patched_1.17.1.jar:git-Paper-196]
        at com.destroystokyo.paper.ServerSchedulerReportingWrapper.run(ServerSchedulerReportingWrapper.java:22) [patched_1.17.1.jar:git-Paper-196]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) [?:?]
        at java.lang.Thread.run(Thread.java:831) [?:?]