Bukkit

Hello, I tried to add a custom command in the example file but I keep getting an error and cannot retrieve the custom commands.

Aliases:
groupchat_say:
command: /gs
type: RUN_COMMAND
runcmd:
- /groupchat say $multiargs
register: true
groupchat_invite:
command: /gi
Type: RUN_COMMAND
runcmd:
- /groupchat invite $arg1
register: true

ERROR:

mycmd-reload commands
[10:57:01 INFO]: > MyCommand by emmerrei v5.7.0
[10:57:01 ERROR]: Cannot load plugins/MyCommand/commands/examples.yml
org.bukkit.configuration.InvalidConfigurationException: while parsing a block mapping
in 'string', line 31, column 1:
gamemode_alias:
^
expected <block end>, but found '<block sequence start>'
in 'string', line 443, column 2:
- /groupchat say $multiargs
^

at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:59) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:160) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.configuration.file.FileConfiguration.load(FileConfiguration.java:128) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.configuration.file.YamlConfiguration.loadConfiguration(YamlConfiguration.java:188) ~[patched_1.16.5.jar:git-Paper-529]
at it.emmerrei.mycommand.InitializeConfigFiles.LoadCommandsFiles(InitializeConfigFiles.java:328) ~[?:?]
at it.emmerrei.mycommand.Main.ReloadConfigFile(Main.java:828) ~[?:?]
at it.emmerrei.mycommand.commands.CmdReload.onCommand(CmdReload.java:44) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:45) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:159) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchCommand(CraftServer.java:810) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.craftbukkit.v1_16_R3.CraftServer.dispatchServerCommand(CraftServer.java:772) ~[patched_1.16.5.jar:git-Paper-529]
at net.minecraft.server.v1_16_R3.DedicatedServer.handleCommandQueue(DedicatedServer.java:413) ~[patched_1.16.5.jar:git-Paper-529]
at net.minecraft.server.v1_16_R3.DedicatedServer.b(DedicatedServer.java:380) ~[patched_1.16.5.jar:git-Paper-529]
at net.minecraft.server.v1_16_R3.MinecraftServer.a(MinecraftServer.java:1214) ~[patched_1.16.5.jar:git-Paper-529]
at net.minecraft.server.v1_16_R3.MinecraftServer.w(MinecraftServer.java:1002) ~[patched_1.16.5.jar:git-Paper-529]
at net.minecraft.server.v1_16_R3.MinecraftServer.lambda$a$0(MinecraftServer.java:175) ~[patched_1.16.5.jar:git-Paper-529]
at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: org.yaml.snakeyaml.parser.ParserException: while parsing a block mapping
in 'string', line 31, column 1:
gamemode_alias:
^
expected <block end>, but found '<block sequence start>'
in 'string', line 443, column 2:
- /groupchat say $multiargs
^

at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(ParserImpl.java:570) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:158) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:148) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.composer.Composer.composeMappingNode(Composer.java:235) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.composer.Composer.composeNode(Composer.java:162) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.composer.Composer.getNode(Composer.java:95) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.composer.Composer.getSingleNode(Composer.java:119) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(BaseConstructor.java:150) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.Yaml.loadFromReader(Yaml.java:490) ~[patched_1.16.5.jar:git-Paper-529]
at org.yaml.snakeyaml.Yaml.load(Yaml.java:416) ~[patched_1.16.5.jar:git-Paper-529]
at org.bukkit.configuration.file.YamlConfiguration.loadFromString(YamlConfiguration.java:57) ~[patched_1.16.5.jar:git-Paper-529]
... 16 more
[10:57:01 INFO]: [MyCmd] Reloaded custom commands. Loaded 0 commands.
[10:57:01 INFO]: MyCmd> Commands reloaded in (2ms)
[10:57:01 INFO]: MyCmd> Custom commands found : 0