shrek_ears

okay i loaded up the world and imageonmap seems to be fixed, but changeskin is still broken [09:36:55] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD' [09:36:55] [main/INFO]: Reloading ResourceManager: Default, bukkit [09:36:56] [Worker-Main-1/INFO]: Loaded 7 recipes [09:36:58] [Server thread/INFO]: Starting minecraft server version 1.16.5 [09:36:58] [Server thread/INFO]: Loading properties [09:36:58] [Server thread/INFO]: This server is running Paper version git-Paper-"b89788a" (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT) [09:36:58] [Server thread/INFO]: Server Ping Player Sample Count: 12 [09:36:58] [Server thread/INFO]: Using 4 threads for Netty based IO [09:36:58] [Server thread/INFO]: Debug logging is disabled [09:36:58] [Server thread/INFO]: Default game type: SURVIVAL [09:36:58] [Server thread/INFO]: Generating keypair [09:36:58] [Server thread/INFO]: Starting Minecraft server on *:25575 [09:36:58] [Server thread/INFO]: Using epoll channel type [09:36:58] [Server thread/WARN]: Initializing Legacy Material Support. Unless you have legacy plugins and/or data this is a bug! [09:37:02] [Server thread/WARN]: Legacy plugin NametagEdit v4.4.10 does not specify an api-version. [09:37:02] [Server thread/WARN]: Legacy plugin ChangeSkin v3.0 does not specify an api-version. [09:37:02] [Server thread/INFO]: [NametagEdit] Loading NametagEdit v4.4.10 [09:37:02] [Server thread/INFO]: [PlayerServer] Loading PlayerServer v1.0-SNAPSHOT [09:37:02] [Server thread/INFO]: [ImageOnMap] Loading ImageOnMap v4.0 [09:37:02] [Server thread/INFO]: [ProtocolLib] Loading ProtocolLib v4.6.1-SNAPSHOT [09:37:03] [Server thread/INFO]: [ChangeSkin] Loading ChangeSkin v3.0 [09:37:03] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it [09:37:03] [Server thread/INFO]: [ProtocolLib] Enabling ProtocolLib v4.6.1-SNAPSHOT [09:37:03] [Server thread/INFO]: [ProtocolLib] Started structure compiler thread. [09:37:03] [Server thread/WARN]: **** SERVER IS RUNNING IN OFFLINE/INSECURE MODE! [09:37:03] [Server thread/WARN]: The server will make no attempt to authenticate usernames. Beware. [09:37:03] [Server thread/WARN]: Whilst this makes it possible to use BungeeCord, unless access to your server is properly restricted, it also opens up the ability for hackers to connect with any username they choose. [09:37:03] [Server thread/WARN]: Please see http://www.spigotmc.org/wiki/firewall-guide/ for further information. [09:37:03] [Server thread/WARN]: To change this, set "online-mode" to "true" in the server.properties file. [09:37:03] [Server thread/INFO]: Preparing level "LasagnaSMP" [09:37:04] [Server thread/INFO]: -------- World Settings For [LasagnaSMP] -------- [09:37:04] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [09:37:04] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Desert: 14357617 Igloo: 14357618 Jungle: 14357619 Swamp: 14357620 Monument: 10387313 Ocean: 14357621 Shipwreck: 165745295 End City: 10387313 Slime: 987234911 Bastion: 30084232 Fortress: 30084232 Mansion: 10387319 Fossil: 14357921 Portal: 34222645 [09:37:04] [Server thread/INFO]: Max TNT Explosions: 100 [09:37:04] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [09:37:04] [Server thread/INFO]: Experience Merge Radius: 3.0 [09:37:04] [Server thread/INFO]: Cactus Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cane Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Melon Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Mushroom Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Sapling Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Beetroot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Carrot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Potato Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Wheat Growth Modifier: 100% [09:37:04] [Server thread/INFO]: NetherWart Growth Modifier: 120% [09:37:04] [Server thread/INFO]: Vine Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cocoa Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Bamboo Growth Modifier: 100% [09:37:04] [Server thread/INFO]: SweetBerry Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Kelp Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Ra 48 / Mi 16 / Tiv true [09:37:04] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [09:37:04] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [09:37:04] [Server thread/INFO]: View Distance: 8 [09:37:04] [Server thread/INFO]: Item Merge Radius: 2.5 [09:37:04] [Server thread/INFO]: Item Despawn Rate: 6000 [09:37:04] [Server thread/INFO]: Arrow Despawn Rate: 1200 Trident Respawn Rate:1200 [09:37:04] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [09:37:04] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [09:37:04] [Server thread/INFO]: Mob Spawn Range: 6 [09:37:04] [Server thread/INFO]: -------- World Settings For [LasagnaSMP_nether] -------- [09:37:04] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [09:37:04] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Desert: 14357617 Igloo: 14357618 Jungle: 14357619 Swamp: 14357620 Monument: 10387313 Ocean: 14357621 Shipwreck: 165745295 End City: 10387313 Slime: 987234911 Bastion: 30084232 Fortress: 30084232 Mansion: 10387319 Fossil: 14357921 Portal: 34222645 [09:37:04] [Server thread/INFO]: Max TNT Explosions: 100 [09:37:04] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [09:37:04] [Server thread/INFO]: Experience Merge Radius: 3.0 [09:37:04] [Server thread/INFO]: Cactus Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cane Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Melon Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Mushroom Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Sapling Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Beetroot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Carrot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Potato Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Wheat Growth Modifier: 100% [09:37:04] [Server thread/INFO]: NetherWart Growth Modifier: 120% [09:37:04] [Server thread/INFO]: Vine Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cocoa Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Bamboo Growth Modifier: 100% [09:37:04] [Server thread/INFO]: SweetBerry Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Kelp Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Ra 48 / Mi 16 / Tiv true [09:37:04] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [09:37:04] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [09:37:04] [Server thread/INFO]: View Distance: 8 [09:37:04] [Server thread/INFO]: Item Merge Radius: 2.5 [09:37:04] [Server thread/INFO]: Item Despawn Rate: 6000 [09:37:04] [Server thread/INFO]: Arrow Despawn Rate: 1200 Trident Respawn Rate:1200 [09:37:04] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [09:37:04] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [09:37:04] [Server thread/INFO]: Mob Spawn Range: 6 [09:37:04] [Server thread/INFO]: -------- World Settings For [LasagnaSMP_the_end] -------- [09:37:04] [Server thread/INFO]: Hopper Transfer: 8 Hopper Check: 1 Hopper Amount: 1 [09:37:04] [Server thread/INFO]: Custom Map Seeds: Village: 10387312 Desert: 14357617 Igloo: 14357618 Jungle: 14357619 Swamp: 14357620 Monument: 10387313 Ocean: 14357621 Shipwreck: 165745295 End City: 10387313 Slime: 987234911 Bastion: 30084232 Fortress: 30084232 Mansion: 10387319 Fossil: 14357921 Portal: 34222645 [09:37:04] [Server thread/INFO]: Max TNT Explosions: 100 [09:37:04] [Server thread/INFO]: Tile Max Tick Time: 50ms Entity max Tick Time: 50ms [09:37:04] [Server thread/INFO]: Experience Merge Radius: 3.0 [09:37:04] [Server thread/INFO]: Cactus Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cane Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Melon Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Mushroom Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Pumpkin Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Sapling Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Beetroot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Carrot Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Potato Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Wheat Growth Modifier: 100% [09:37:04] [Server thread/INFO]: NetherWart Growth Modifier: 120% [09:37:04] [Server thread/INFO]: Vine Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Cocoa Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Bamboo Growth Modifier: 100% [09:37:04] [Server thread/INFO]: SweetBerry Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Kelp Growth Modifier: 100% [09:37:04] [Server thread/INFO]: Entity Activation Range: An 32 / Mo 32 / Ra 48 / Mi 16 / Tiv true [09:37:04] [Server thread/INFO]: Entity Tracking Range: Pl 48 / An 48 / Mo 48 / Mi 32 / Other 64 [09:37:04] [Server thread/INFO]: Allow Zombie Pigmen to spawn from portal blocks: true [09:37:04] [Server thread/INFO]: View Distance: 8 [09:37:04] [Server thread/INFO]: Item Merge Radius: 2.5 [09:37:04] [Server thread/INFO]: Item Despawn Rate: 6000 [09:37:04] [Server thread/INFO]: Arrow Despawn Rate: 1200 Trident Respawn Rate:1200 [09:37:04] [Server thread/INFO]: Zombie Aggressive Towards Villager: true [09:37:04] [Server thread/INFO]: Nerfing mobs spawned from spawners: false [09:37:04] [Server thread/INFO]: Mob Spawn Range: 6 [09:37:04] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld [09:37:04] [Server thread/INFO]: Loaded 0 spawn chunks for world LasagnaSMP [09:37:04] [Server thread/INFO]: Preparing spawn area: 0% [09:37:04] [Server thread/INFO]: Time elapsed: 418 ms [09:37:04] [Server thread/INFO]: Preparing start region for dimension minecraft:the_nether [09:37:04] [Server thread/INFO]: Loaded 0 spawn chunks for world LasagnaSMP_nether [09:37:05] [Server thread/INFO]: Time elapsed: 486 ms [09:37:05] [Server thread/INFO]: Preparing start region for dimension minecraft:the_end [09:37:05] [Server thread/INFO]: Loaded 0 spawn chunks for world LasagnaSMP_the_end [09:37:05] [Server thread/INFO]: Time elapsed: 356 ms [09:37:05] [Server thread/INFO]: [NametagEdit] Enabling NametagEdit v4.4.10* [09:37:05] [Server thread/INFO]: [PlayerServer] Enabling PlayerServer v1.0-SNAPSHOT [09:37:06] [Server thread/INFO]: [ImageOnMap] Enabling ImageOnMap v4.0 [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/WARN]: Warning: Nashorn engine is planned to be removed from a future JDK release [09:37:06] [Server thread/INFO]: [ImageOnMap] Loaded 0 player map files. [09:37:06] [Server thread/WARN]: [ImageOnMap] Collect data disabled [09:37:06] [Server thread/INFO]: [ChangeSkin] Enabling ChangeSkin v3.0* [09:37:06] [Server thread/INFO]: [ChangeSkin] BungeeCord detected. Activating BungeeCord support [09:37:06] [Server thread/INFO]: [ChangeSkin] Make sure you installed the plugin on BungeeCord too [09:37:06] [Server thread/ERROR]: Error occurred while enabling ChangeSkin v3.0 (Is it up to date?) java.lang.IllegalArgumentException: Channel must contain : separator (attempted to use ChangeSkin) at org.bukkit.plugin.messaging.StandardMessenger.validateAndCorrectChannel(StandardMessenger.java:503) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.plugin.messaging.StandardMessenger.registerOutgoingPluginChannel(StandardMessenger.java:183) ~[server.jar:git-Paper-"b89788a"] at com.github.games647.changeskin.bukkit.ChangeSkinBukkit.onEnable(ChangeSkinBukkit.java:62) ~[?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:380) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:476) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugin(CraftServer.java:501) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.craftbukkit.v1_16_R3.CraftServer.enablePlugins(CraftServer.java:415) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.loadWorld(MinecraftServer.java:465) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.DedicatedServer.init(DedicatedServer.java:239) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:936) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174) ~[server.jar:git-Paper-"b89788a"] at java.lang.Thread.run(Thread.java:834) [?:?] [09:37:06] [Server thread/INFO]: [ChangeSkin] Disabling ChangeSkin v3.0 [09:37:06] [Server thread/INFO]: Running delayed init tasks [09:37:06] [Server thread/INFO]: Done (8.618s)! For help, type "help" [09:37:06] [Server thread/INFO]: Timings Reset [09:37:21] [User Authenticator #1/INFO]: UUID of player Orblinker is 8b426690-5e9b-4a38-9c0d-8518a0eddacd [09:37:21] [Server thread/INFO]: Orblinker joined the game [09:37:21] [Server thread/INFO]: Orblinker[/] logged in with entity id 267 at ([LasagnaSMP]377.9961017193331, 12.0, 50.72075526399128) [09:39:33] [Server thread/INFO]: Orblinker issued server command: /changeskin [09:39:33] [Server thread/ERROR]: null org.bukkit.command.CommandException: Cannot execute command 'changeskin' in plugin ChangeSkin v3.0 - plugin is disabled. at org.bukkit.command.PluginCommand.execute(PluginCommand.java:37) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[server.jar:git-Paper-"b89788a"] at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:807) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PlayerConnection.handleCommand(PlayerConnection.java:2021) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PlayerConnection.c(PlayerConnection.java:1832) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PlayerConnection.a(PlayerConnection.java:1785) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:47) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PacketPlayInChat.a(PacketPlayInChat.java:5) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.PlayerConnectionUtils.lambda$ensureMainThread$1(PlayerConnectionUtils.java:23) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.TickTask.run(SourceFile:18) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.bb(MinecraftServer.java:1133) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.executeNext(MinecraftServer.java:1126) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.sleepForTick(MinecraftServer.java:1087) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1001) ~[server.jar:git-Paper-"b89788a"] at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:174) ~[server.jar:git-Paper-"b89788a"] at java.lang.Thread.run(Thread.java:834) [?:?] [09:39:38] [Server thread/INFO]: Orblinker issued server command: /tomap [09:39:45] [Server thread/INFO]: Orblinker issued server command: /plugins [09:40:23] [Server thread/INFO]: Orblinker issued server command: /dl log from what i understand, i need to install it on BungeeCord too... How exactly should i do that?

Really? on my server, its still not loading after resetting config [i restarted the server too]. Do i need to reinstall the plugin?

your entire conversation is so fake its funny

Minehut has removed a java feature called Reflection. You may notice other plugins not working, as most plugins rely on it, for example ImageOnMap. You'll probably need to wait until they [hopefully] add it back. If you're into programming and all, this java article shows what Reflection is: https://www.oracle.com/technical-resources/articles/java/javareflection.html

Its a problem with Minehut, they removed a java feature called Reflection which most plugins depend on, like WorldEdit and ImageOnMap

I have replied to multiple posts about ImageOnMap but here is the summary. Minehut has removed functionality for a java feature called Reflection. i dont program in java so i cant say i understand it completely but its basically just used to obtain data. https://www.oracle.com/technical-resources/articles/java/javareflection.html explains Reflection in java, if you're interested. The developers of ImageOnMap said this: Minehut, a Minecraft server hosting plateform, disabled a fundamental component of Java programs (including plugins) called reflection. It's rather complicated, but for the idea it's what we use to hook into the Minecraft server itself and do advanced things Spigot/Paper does not allow us to do. We (and a lot of other plugins) use this feature a lot. For advanced items management (think about the special maps ImageOnMap gives), some GUIs (this sign GUI to rename a map), translations (so everyone can use IoM in its own language, even on the same server), etc. It would be a huge task (like really huge) to rewrite ImageOnMap without that. That's why multiple plugins suddenly broke on April 2021. Reflection is widely used. That's not only ImageOnMap. Some popular plugins like WorldEdit or WorldGuard massively use reflection too. They are probably broken too. Minehut announced this is fixed so you may only have to reboot your server. If it's not working, they are working on a fork to fix that on their side. There is nothing we can do about that. To complain, please contact the Minehut staff. Feel free to link to this FAQ entry or to ask them to contact us directly. Source: [https://dev.zcraft.fr/imageonmap/faq/#i-m-using-minehut-and-imageonmap-doesn-t-work] Basically, minehut is attempting to rewrite their own version of imageonmap, according to the developers of ImageOnMap

@CoolProgrammer, that's actually not the case. The plugin works just fine on every other server. What server did you take that screenshot in? The official ImageOnMap support discord server doesnt have that person there, nor does it have that message in the announcements. However, they noticed that Minehut had issues with the plugin and thats because Minehut has disabled a core mechanic of most java programs [including plugins] called Reflection. Im not going to pretend i understand it because i dont program in java, but here: https://www.oracle.com/technical-resources/articles/java/javareflection.html From my understanding, its used to obtain data and to basically Reflect the dataonto something, but dont take my word for it, its just what i understood. So in the logs, it shows that Minehut has removed the entire thing. Caused by: java.security.AccessControlException: rawll: This functionality is no longer supported on Minehut The developers added this onto their FAQ: Minehut, a Minecraft server hosting plateform, disabled a fundamental component of Java programs (including plugins) called reflection. It's rather complicated, but for the idea it's what we use to hook into the Minecraft server itself and do advanced things Spigot/Paper does not allow us to do. We (and a lot of other plugins) use this feature a lot. For advanced items management (think about the special maps ImageOnMap gives), some GUIs (this sign GUI to rename a map), translations (so everyone can use IoM in its own language, even on the same server), etc. It would be a huge task (like really huge) to rewrite ImageOnMap without that. That's why multiple plugins suddenly broke on April 2021. Reflection is widely used. That's not only ImageOnMap. Some popular plugins like WorldEdit or WorldGuard massively use reflection too. They are probably broken too. Minehut announced this is fixed so you may only have to reboot your server. If it's not working, they are working on a fork to fix that on their side. TL;DR Minehut removed the main feature which most world-related plugins use. WorldEdit will also not be supported because it is a world-related plugin. Either you wait for them to make their own version, OR you wait for them to addd the feature back.

Yeah, the ImageonMap plugin stopped working because Minehut removed support for Reflection. Its an important part of most Java programs, and this link explains what it is, and im not gonna pretend to understand it because i have no knowledge of java. The ImageOnMap support discord server found out about this due to a few reports from minehut users, and so they updated their FAQ after doing some digging into the Minehut Logs: Minehut, a Minecraft server hosting platform, disabled a fundamental component of Java programs (including plugins) called reflection. It's rather complicated, but for the idea it's what we use to hook into the Minecraft server itself and do advanced things Spigot/Paper does not allow us to do. We (and a lot of other plugins) use this feature a lot. For advanced items management (think about the special maps ImageOnMap gives), some GUIs (this sign GUI to rename a map), translations (so everyone can use IoM in its own language, even on the same server), etc. It would be a huge task (like really huge) to rewrite ImageOnMap without that. That's why multiple plugins suddenly broke on April 2021. Reflection is widely used. That's not only ImageOnMap. Some popular plugins like WorldEdit or WorldGuard massively use reflection too. They are probably broken too. Sure enough, WorldEdit and WorldGuard are broken too. TL;DR: Minehut removed support for a feature that lots of plugins use, therefore breaking compatibility with most plugins. They announced that its fixed now, and they claim that a quick server restart should fix it. If that doesnt work out for you, then you have to keep waiting as Minehut are working on their own version of ImageOnMap.