I have my Newsletter plugin set to force subscription upon user registration. I am using the Jupiter theme and I am using the Registration Magic plugin for registration, and upon registration, users are redirected to a log-in screen. I noticed that when I was testing this, the following error came up on the screen (and then the site redirected to the correct page as normal):
“Warning: Cannot modify header information – headers already sent by (output started at /homepages/22/d629384495/htdocs/wp-content/themes/jupiter/header.php:2) in /homepages/22/d629384495/htdocs/wp-content/plugins/newsletter/subscription/subscription.php on line 425”
Everything works correctly – the registering user is added to the subscribers list, and then site redirects as expected. I just don’t want my users to see that error and think that something is wrong.