this my code:
// Check if the user is ready to play!
console.log("You are at a Justin Bieber concert, and you hear this lyric 'Lace my shoes off, start racing.'");
console.log("Suddenly, Bieber stops and says, 'Who wants to race me?'");
var userAnswer = prompt("Do you want to race Bieber on stage?");
var userAnswer= prompt("Do you want to race Bieber on stage?");
if(userAnswer === "yes")
console.log("You and Bieber start racing. It's neck and neck! You win by a shoelace!");
console.log("Oh no! Bieber shakes his head and sings 'I set a pace, so I can race without pacing.'");
Why does the error occur?