It's not connecting

I tried to log in to my erpnext but it keeps on saying error but I used it last week without any problem it didn’t even ask me my password. But today it ask me username and password then when I try to log in it doesn’t work. Can anyone help me?

If you’re self hosted, you can use the bench to change your password. Go for bench --help and start there.

Thank you it helped a lot.