Hi, welcome. Please put the code you have between three backticks, because it is impossible to check it this way, let alone copy it and change what is needed. See point 11 in this post for that:
The unique_id message is not an error, so there’s nothing wrong. But if you do want to configure things through the UI, you need to add the unique id. Similar to how all the lights have settings like adress or slave, you add unique_id with a unique string that isn’t used elsewhere in HA. Once the new config is reloaded, you’ll be able to use the UI to change other properties for the lights.