Reading through the fatal error, you can see it traces back to the Let’s Encrypt role. You can also see it’s complaining about a mismatch in the agreement url.
Let’s search Discourse or GitHub for those terms:
https://discourse.roots.io/search?q=let's%20encrypt%20agreement%20url
Both have the answers you need.
Please try searching before requesting help in future. It’s the reason we maintain these forums and keep our Git repositories informative.