Help me:
[18:10:20] [Server thread/INFO]: [AdvancedPortals] BLOCK_PORTAL_TRAVEL found
[18:10:20] [Server thread/ERROR]: Error occurred while enabling AdvancedPortals v0.9.3 (Is it up to date?)
java.lang.NoClassDefFoundError: com/sekwah/advancedportals/bukkit/AdvancedPortalsCommand
at com.sekwah.advancedportals.bukkit.AdvancedPortalsPlugin.registerCommands(AdvancedPortalsPlugin.java:98) ~[Advanced-Portals-0.9.3.jar:?]
at com.sekwah.advancedportals.bukkit.AdvancedPortalsPlugin.onEnable(AdvancedPortalsPlugin.java:71) ~[Advanced-Portals-0.9.3.jar:?]
at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:281) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:189) ~[paper-1.20.1.jar:git-Paper-196]
at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:104) ~[paper-1.20.1.jar:git-Paper-196]
at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:507) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugin(CraftServer.java:642) ~[paper-1.20.1.jar:git-Paper-196]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.enablePlugins(CraftServer.java:553) ~[paper-1.20.1.jar:git-Paper-196]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.reload(CraftServer.java:1097) ~[paper-1.20.1.jar:git-Paper-196]
at org.bukkit.Bukkit.reload(Bukkit.java:993) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:54) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:155) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.craftbukkit.v1_20_R1.CraftServer.dispatchCommand(CraftServer.java:987) ~[paper-1.20.1.jar:git-Paper-196]
at org.bukkit.craftbukkit.v1_20_R1.command.BukkitCommandWrapper.run(BukkitCommandWrapper.java:64) ~[paper-1.20.1.jar:git-Paper-196]
at com.mojang.brigadier.CommandDispatcher.execute(CommandDispatcher.java:265) ~[paper-1.20.1.jar:?]
at net.minecraft.commands.Commands.performCommand(Commands.java:324) ~[?:?]
at net.minecraft.commands.Commands.performCommand(Commands.java:308) ~[?:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.performChatCommand(ServerGamePacketListenerImpl.java:2354) ~[?:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.lambda$handleChatCommand$21(ServerGamePacketListenerImpl.java:2314) ~[?:?]
at net.minecraft.util.thread.BlockableEventLoop.lambda$submitAsync$0(BlockableEventLoop.java:59) ~[?:?]
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
at net.minecraft.server.TickTask.run(TickTask.java:18) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:153) ~[?:?]
at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:24) ~[?:?]
at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:1338) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:197) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:126) ~[?:?]
at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:1315) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:1308) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:136) ~[?:?]
at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:1286) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1174) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:317) ~[paper-1.20.1.jar:git-Paper-196]
at java.lang.Thread.run(Thread.java:840) ~[?:?]
Caused by: java.lang.ClassNotFoundException: com.sekwah.advancedportals.bukkit.AdvancedPortalsCommand
at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:183) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:150) ~[paper-api-1.20.1-R0.1-SNAPSHOT.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:525) ~[?:?]
... 34 more
[18:10:20] [Server thread/INFO]: [AdvancedPortals] Disabling AdvancedPortals v0.9.3
[18:10:20] [Server thread/INFO]: Advanced portals are being disabled!

What server jar are you using? also can you try re-downloading the plugin? Classes are missing that should be in the normal jar.

Closed due to inactivity