Challenge Telephone Number validator test case

I tried to submit my solution but it does not pass test case when i do that test self it is as the test case result needed to pass which is given in screenshot and in my code i have just added {userInput.value} removing this also doesnot pass the test. Help please!
codepen link: https://codepen.io/SP-services/pen/QWXBjzB

Welcome to the forum @servicessp35

You have a syntax error:

Uncaught TypeError: Cannot read properties of null (reading ‘addEventListener’)

Happy coding