Error when loading plugin

[habelo78]

Describe the bug
[21:48:26 INFO]: [TradeSystem] Enabling TradeSystem v2.6.3_Hotfix-7
[21:48:26 INFO]:
[21:48:26 INFO]: __________________________________________________________
[21:48:26 INFO]:
[21:48:26 INFO]: TradeSystem [2.6.3_Hotfix-7]
[21:48:26 INFO]:
[21:48:26 INFO]: Status:
[21:48:26 INFO]:
[21:48:26 INFO]: MC-Version: Paper (1.21.11)
[21:48:26 INFO]:
[21:48:26 WARN]: org.bukkit.configuration.InvalidConfigurationException: Top level is not a Map.
[21:48:26 WARN]: at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:109)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.loader.UTFConfig.loadFromString(UTFConfig.java:129)
[21:48:26 WARN]: at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:160)
[21:48:26 WARN]: at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:128)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.loader.UTFConfig.loadConf(UTFConfig.java:33)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.ConfigFile.loadConfig(ConfigFile.java:133)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.ConfigFile.(ConfigFile.java:49)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:62)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:47)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.copyConfig(TradeSystem.java:305)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.loadConfigFiles(TradeSystem.java:211)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.lambda$onEnable$0(TradeSystem.java:107)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.printConsoleInfo(TradeSystem.java:186)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.onEnable(TradeSystem.java:106)
[21:48:26 WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:279)
[21:48:26 WARN]: at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202)
[21:48:26 WARN]: at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109)
[21:48:26 WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520)
[21:48:26 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:639)
[21:48:26 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:596)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.initPostWorld(MinecraftServer.java:636)
[21:48:26 WARN]: at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:365)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1258)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:388)
[21:48:26 WARN]: at java.base/java.lang.Thread.run(Thread.java:1474)
[21:48:26 WARN]: org.bukkit.configuration.InvalidConfigurationException: Top level is not a Map.
[21:48:26 WARN]: at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:109)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.loader.UTFConfig.loadFromString(UTFConfig.java:129)
[21:48:26 WARN]: at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:160)
[21:48:26 WARN]: at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:128)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.loader.UTFConfig.loadConf(UTFConfig.java:33)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.ConfigFile.loadConfig(ConfigFile.java:133)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.ConfigFile.(ConfigFile.java:49)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:62)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:55)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:43)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.lib.codingapi.files.FileManager.loadFile(FileManager.java:39)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.loadConfigFiles(TradeSystem.java:214)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.lambda$onEnable$0(TradeSystem.java:107)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.printConsoleInfo(TradeSystem.java:186)
[21:48:26 WARN]: at TradeSystem_v2.6.3_Hotfix-7.jar//de.codingair.tradesystem.spigot.TradeSystem.onEnable(TradeSystem.java:106)
[21:48:26 WARN]: at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:279)
[21:48:26 WARN]: at io.papermc.paper.plugin.manager.PaperPluginInstanceManager.enablePlugin(PaperPluginInstanceManager.java:202)
[21:48:26 WARN]: at io.papermc.paper.plugin.manager.PaperPluginManagerImpl.enablePlugin(PaperPluginManagerImpl.java:109)
[21:48:26 WARN]: at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:520)
[21:48:26 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugin(CraftServer.java:639)
[21:48:26 WARN]: at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:596)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.initPostWorld(MinecraftServer.java:636)
[21:48:26 WARN]: at net.minecraft.server.dedicated.DedicatedServer.initServer(DedicatedServer.java:365)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1258)
[21:48:26 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:388)
[21:48:26 WARN]: at java.base/java.lang.Thread.run(Thread.java:1474)

To Reproduce
Steps to reproduce the behavior:

1. Downloaded the latest version (GitHub)
2. Used 1.21.11 for server and started it
3. Plugin having errors

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Additional context
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