Windows 10 64-bit, tried Chrome and Firefox.
What a weird error message, could you copy and paste your code to the forum and provide us with the url of the exercise?
That is weird. Hmmm… does the button still work? What have you done to try and fix this?
This is my code:
<!DOCTYPE html> <html> <head> <title> Some Title Thingy </title> </head> <body> <p>First paragraph</p> <p>Second paragraph</p> </body> </html>
This is excercise url: https://www.codecademy.com/courses/web-beginner-en-HZA3b/0/5
Code is fine, maybe try a different browser? Could be you hitted a glitch
OK, so far I’ve tried 3 different PCs, all running Windows 10 64-bit, Chrome, Firefox and Edge, also tried making a new account, and still nothing.