Why cant I archive a list by id with the trello API?

I am attempting to do a simple put request to archive a list and am using Postman to test it out. However when I use the URL below it gave me a 400 error when I double checked the key and the token.

https://api.trello.com/1/lists/60020d2851f51d8a04bd50f5/closed?key=<key here>&token=<Token Here>

Can you tell us what the error message you’re receiving back with the 400 is? Generally error messages help indicate what might be going wrong.