Can I get help please

Tell us what’s happening:
I didn’t change the code but it is telling me that i do
what should I need todo?

Your code so far

// Setup
var myDog = {
"name": "Happy Coder",
"legs": 4,
"tails": 1,
"friends": ["freeCodeCamp Campers"],
"bark": "woof"

// Only change code below this line

delete myDog.tails;

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36.

Challenge: Delete Properties from a JavaScript Object

Link to the challenge:

This is a bug
for more info