Type Error "e is undefined"

JavaScript
1 

<body>
<script>
  // Add your code below this line

d3.select("body")
.append("h1")
.text("Learning D3")

  // Add your code above this line
</script>
</body>

Your browser information:

User Agent is: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0.

Challenge: Add Document Elements with D3

Link to the challenge:

2

Just tried your code and it worked …

3

@amaniratna123, nothing found wrong, if you still get error- just refresh your browser and run the code again.