wrong

I purchase, download, and install That's it. Does it appear to be incompatible with BetonQuest? 2:18:11] [Server thread/ERROR]: Error occurred while enabling MythicDungeons v1.1.1 (Is it up to date?) java.lang.NoClassDefFoundError: org/betonquest/betonquest/BetonQuest at net.playavalon.mythicdungeons.MythicDungeons.onEnable(MythicDungeons.java:273) ~[MythicDungeons-1.1.1pro.jar:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:264) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:370) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:542) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at org.bukkit.craftbukkit.v1_19_R1.CraftServer.enablePlugin(CraftServer.java:565) ~[paper-1.19.2.jar:git-Paper-132] at org.bukkit.craftbukkit.v1_19_R1.CraftServer.enablePlugins(CraftServer.java:479) ~[paper-1.19.2.jar:git-Paper-132] at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:636) ~[paper-1.19.2.jar:git-Paper-132] at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:422) ~[paper-1.19.2.jar:git-Paper-132] at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:306) ~[paper-1.19.2.jar:git-Paper-132] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1126) ~[paper-1.19.2.jar:git-Paper-132] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:305) ~[paper-1.19.2.jar:git-Paper-132] at java.lang.Thread.run(Thread.java:833) ~[?:?] Caused by: java.lang.ClassNotFoundException: org.betonquest.betonquest.BetonQuest at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:151) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:103) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?] ... 12 more

You are using the wrong version of BetonQuest. You must use version 2.0+, which can be downloaded from their website here: https://docs.betonquest.org/2.0-DEV/Downloads/