Declare JavaScript Variables error

Tell us what’s happening:
I am getting this error
TypeError: Cannot read property ‘message’ of undefined
Your code so far

var myName;

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.192 Safari/537.36.

Challenge: Declare JavaScript Variables

Link to the challenge:

I would try clearing your cache and restarting you browser. That code should be ok so long as it is the only thing in the solution.