We have a user here who had a similar problem and he solved it through what the user below says:
I got that error once as I closed the previous login page and just verified my login email. I tried again the next day and my wallet opened and hence you can either trying clearing your cache and then again entering your password/verifying the login or wait for some hours till you can again login. If your password is correct, I don't think there is any other issue.
*Fixed
it fixed and i did not anything, just i tried more to login.
i guess that error about blockchain site, thank you for all help guys.
If you have waited for days, You can just try importing your wallet into another wallet. If that time comes, just give us a
GO signal here in your thread and we'll guide you.
Please note that you need your recovery phrase in importing otherwise you can't do it.