The Solution is :
By FTP change some codes .
1. Go to wp-includes/functions.php
search for :
return wp_validate_redirect( $ref, false );
replace with :
return wp_unslash( $ref );
2. Go to wp-includes/functions.php
search for :
return wp_validate_redirect( wp_unslash( $_REQUEST['_wp_original_http_referer'] ), false );
replace with :
return wp_unslash( $_REQUEST['_wp_original_http_referer'] );
3. Go to wp-includes/pluggable.php
search for :
$location = trim( $location );
remove this code :
$location = trim( $location );
Save your changes .
Make Refresh you will see the problem was solved .
