( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/wordpress-multisite/wp-content/themes/twentyseventeen/header.php:16) in /var/www/wordpress-multisite/wp-includes/pluggable.php on line 1251
Call Stack
#TimeMemoryFunctionLocation
10.0009503000{main}( ).../wp-signup.php:0
21.31699700368get_header( ).../wp-signup.php:79
31.31699700792locate_template( ).../general-template.php:41
41.31699700904load_template( ).../template.php:671
51.31719708728require_once( '/var/www/wordpress-multisite/wp-content/themes/twentyseventeen/header.php' ).../template.php:722
61.31739709464wp_head( ).../header.php:22
71.31739709464do_action( ).../general-template.php:2745
81.31749709840WP_Hook->do_action( ).../plugin.php:465
91.31749709840WP_Hook->apply_filters( ).../class-wp-hook.php:310
101.71489798864do_signup_header( ).../class-wp-hook.php:286
111.71489798904do_action( ).../wp-signup.php:28
121.71489799280WP_Hook->do_action( ).../plugin.php:465
131.71489799280WP_Hook->apply_filters( ).../class-wp-hook.php:310
141.71489800408rbz_prevent_multisite_signup( ).../class-wp-hook.php:286
151.71499800472wp_redirect( ).../no-signup.php:9
161.90879784968header ( ).../pluggable.php:1251

( ! ) Warning: Cannot modify header information - headers already sent by (output started at /var/www/wordpress-multisite/wp-content/themes/twentyseventeen/header.php:16) in /var/www/wordpress-multisite/wp-includes/pluggable.php on line 1254
Call Stack
#TimeMemoryFunctionLocation
10.0009503000{main}( ).../wp-signup.php:0
21.31699700368get_header( ).../wp-signup.php:79
31.31699700792locate_template( ).../general-template.php:41
41.31699700904load_template( ).../template.php:671
51.31719708728require_once( '/var/www/wordpress-multisite/wp-content/themes/twentyseventeen/header.php' ).../template.php:722
61.31739709464wp_head( ).../header.php:22
71.31739709464do_action( ).../general-template.php:2745
81.31749709840WP_Hook->do_action( ).../plugin.php:465
91.31749709840WP_Hook->apply_filters( ).../class-wp-hook.php:310
101.71489798864do_signup_header( ).../class-wp-hook.php:286
111.71489798904do_action( ).../wp-signup.php:28
121.71489799280WP_Hook->do_action( ).../plugin.php:465
131.71489799280WP_Hook->apply_filters( ).../class-wp-hook.php:310
141.71489800408rbz_prevent_multisite_signup( ).../class-wp-hook.php:286
151.71499800472wp_redirect( ).../no-signup.php:9
161.90899784992header ( ).../pluggable.php:1254