The bot currently has an error message that tells you that you cannot include more than 100 messages, but for some reason it likes to spam instead of purging.
To avoid this, you would have to do the purge command, then let it to finish before you can send another one.
Closing out this issue as it should now be fixed. The bot deletes a specific amount of messages so quickly that a human would not be able to do the second command.
The bot currently has an error message that tells you that you cannot include more than 100 messages, but for some reason it likes to spam instead of purging.
To avoid this, you would have to do the purge command, then let it to finish before you can send another one.