minecolonies version
minecolonies-1.12.2-0.10.22-ALPHA-universal.jar

expected behavior
Delete colony

Actual Behavior
invalid value '1' for required argument colony

Step to recreate
1: start a server
2: start a colony
3: remove town hall
4: try to delete colonie

Sorry, we don't offer 1.12 support anymore. But the command is /mc colony delete colony: 1