Another WSOD

Hello. I started with i could not login to wp-admin. Then i restored my files from a backup. But know i can only see my fronpage and login page. But when i will login i get a white screen. I can’t either see all my pages, then i got an “Not found” error.

I enabebled debugginf mode and got this when i login:

Notice: bbp_setup_current_user was called incorrectly. The current user is being initialized without using $wp->init(). Please see Debugging in WordPress for more information. (This message was added in version 2.3.) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php on line 3547 Notice: bp_setup_current_user was called incorrectly. The current user is being initialized without using $wp->init(). Please see Debugging in WordPress for more information. (This message was added in version 1.7.) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php on line 3547 Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-content/plugins/ninja-forms/ninja-forms.php on line 652 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-login.php on line 424 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-login.php on line 437 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/pluggable.php on line 918 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/pluggable.php on line 919 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/pluggable.php on line 920 Warning: Cannot modify header information – headers already sent by (output started at /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/functions.php:3547) in /customers/4/2/0/fisketeam.dk/httpd.www/wp-includes/pluggable.php on line 1178

Can anyne help me out?