Internal Server Error

[Leumas47-code]

Describe the bug
When I submitted my code for a kata, it gave the error.

To Reproduce
def create_phone_number(n):
if len(n) != 10:
raise ValueError("List must contain exactly 10 numbers.")
numbers_str = ''.join(map(str, n))
formatted_phone_number = f"({numbers_str[:3]}) {numbers_str[3:6]}-{numbers_str[6:]}"
return formatted_phone_number

Expected behavior
I expected it to say "code submitted!" or something similar then take me to the discussions page.

Screenshots

Browser
I am on Chrome.

Additional context
This has not happened for any other Kata I have done, ever.

[hobovsky]

Duplicate of #3209