Trying start ranked command

[biber890]

I tried start ranked plugin but when i type command ranked it show me This Error

java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "key" is null
    at arc.struct.ObjectMap.containsKey(ObjectMap.java:503)
    at mindustry.core.World.loadMap(World.java:344)
    at mindustry.core.World.loadMap(World.java:339)
    at ranked.RankedPlugin.loadLobby(RankedPlugin.java:293)
    at ranked.RankedPlugin.lambda$registerServerCommands$15(RankedPlugin.java:194)
    at arc.util.CommandHandler.lambda$register$1(CommandHandler.java:125)
    at arc.util.CommandHandler.handleMessage(CommandHandler.java:86)
    at arc.util.CommandHandler.handleMessage(CommandHandler.java:30)
    at mindustry.server.ServerControl.handleCommandString(ServerControl.java:1021)
    at mindustry.server.ServerControl.lambda$new$0(ServerControl.java:55)
    at arc.util.TaskQueue.run(TaskQueue.java:17)
    at arc.backend.headless.HeadlessApplication.mainLoop(HeadlessApplication.java:81)
    at arc.backend.headless.HeadlessApplication$1.run(HeadlessApplication.java:52)

Can you fix it Thanks

[nekonya3031]

Hello, this issue related to outdated plugin dependencies. For fix it we must migrate to last versions of dependencies, which have changed significantly and it can took long time.

[biber890]

Oh ok Thank you.