Can't acces wp-admin on new site

Hi,

I have installed wordpress on my domain onefinance.ie. I built it on another domain, and transferred it using the Duplicator plugin and Filezilla.

The transfer was successful (one of my RSS feeds didn’t come across, but aprt from that, it was perfect.)

However, onefinance.ie/wp-admin just brings up a blank page.

I can access the login page from onefinance.ie/wp-login.php, but when I enter my details and submit, it just brings me to the blank wp-admin page.

However, when I visit my site, it shows that I am logged in, but when I try to access the dashboard, it just brings up the white screen again.

Would really appreciate any help, please let me know if I need to provide more information.

Thanks,

Paul