Dreaded blank screen on Backoffice Link!

[rayspages.xyz]

Hi.

I installed Prestashop 1.7 via my Hosting Company Kualo.
It worked perfectly! Or so it seemed. Today I have started to work on the pages and again, no problemsuntil an hour ago.

Now any time I attempt to go to my Backoffice I get a Blank screen.

[Rhobur]

Edit by FTP the PS_ROOT/config/defines.inc.php and set the Debug on by changing the false to true like this here, 

define('_PS_MODE_DEV_', true);

then observe the error messages.

[rayspages.xyz]

Hi Roberto. Sorry I didn't reply earlier but thanks for getting bck on this. It's resolved now.