Jenkins installing in VM of ubuntu

How can I fix the following error:

Welcome to the Jenkins community!

As a kindness to others, please post text with the messages rather than posting a picture of the messages. When you post a picture of the messages you make it very difficult for others to copy those messages for more explanation and you make it more difficult for others to find the message since it is hidden inside a picture.

You may find good guidance for your question in one of the following previous answers: