I have no possibility to get into the backend of WP because i have this error. The error started with the WP-contactform:
-cannot modify header information -headers already sent by (...wp-content/plugins/wp-contactform.php:253) in /home.../wp-includes/functions.php on line 1650
the same but ...online 1651, 1652, 1653, 1655.
Could anybody tell me what can i do? I cannot modify anything within the administration interface or backend. I have read the two pages but i do not understand where is the error.