Accessing `messageContent.first` without checking if the list is empty will throw an exception if `messageContent` is an empty list. Add a check for `messageContent.isNotEmpty` before accessing `first`.

[devsteppe9]

Accessing messageContent.first without checking if the list is empty will throw an exception if messageContent is an empty list. Add a check for messageContent.isNotEmpty before accessing first.

Originally posted by @Copilot in #7 (comment)