Hey guys,

would be great to get some help on this.
When I edit some content, I can't save the page afterwards & get the error attached:

what can I do? Help would be supergreat.

Thank u!!!!

.....

Warning: trim() expects parameter 1 to be string, object given in /home/www/web94/html/NEU/wp-includes/class-wp-hook.php on line 298

Warning: Cannot modify header information - headers already sent by (output started at /home/www/web94/html/NEU/wp-includes/class-wp-hook.php:298) in /home/www/web94/html/NEU/wp-includes/pluggable.php on line 1195

0_1513342109696_Bildschirmfoto 2017-12-15 um 13.45.35.png