Discord has harsh rate-limits in place at updating/modifying/removing existing application commands. Since you loop through every command and send one api request per command you get easily rate-limited very fast.

To fix this behaviour update your code as follows:

• Do not clear old commands, you can just override them and the old ones will be gone.

• If you want to clear all commands you can either collect them all in an array before sending the api request, or - and this is the better behaviour - just put an empty array.