Public url isn't available anymore?

[Karolololol]

I used to work with this colab a lot like 2 months ago but now when im executing the code it just appears the private url and not the public one, and my browser never could open it :(

[anywindo]

it's still not showing

[StevenBeach33]

For me it's showing, but when open it in new tab, it say "504 Gateway"

[abishek1802]

how to fix it