Error

[catches]

Got this error when starting up the server
[15:56:40 ERROR]: Error occurred while enabling Vouchers v2.9.11 (Is it up to date?) java.lang.NoClassDefFoundError: org/bstats/bukkit/Metrics at com.badbones69.vouchers.Vouchers.onEnable(Vouchers.java:64) ~[Vouchers-2.9.11.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-246] at org.bukkit.craftbukkit.v1_19_R1.CraftServer.enablePlugins(CraftServer.java:479) ~[paper-1.19.2.jar:git-Paper-246] at net.minecraft.server.MinecraftServer.loadWorld0(MinecraftServer.java:636) ~[paper-1.19.2.jar:git-Paper-246] at net.minecraft.server.MinecraftServer.loadLevel(MinecraftServer.java:422) ~[paper-1.19.2.jar:git-Paper-246] at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:306) ~[paper-1.19.2.jar:git-Paper-246] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1100) ~[paper-1.19.2.jar:git-Paper-246] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:305) ~[paper-1.19.2.jar:git-Paper-246] at java.lang.Thread.run(Thread.java:833) ~[?:?] Caused by: java.lang.ClassNotFoundException: org.bstats.bukkit.Metrics at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:177) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:124) ~[paper-api-1.19.2-R0.1-SNAPSHOT.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:520) ~[?:?] ... 12 more