Last update broke my site

I’m working hard to revert right now.

Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-content/plugins/wordpress-social-login/wp-social-login.php on line 64

Warning: ini_set(): Cannot change zlib.output_handler – headers already sent in /home/micmed12/indidjinus/wp-content/plugins/wp-persistent-login/wp_persistent_login.php on line 127

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-includes/pluggable.php on line 914

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-includes/pluggable.php on line 915

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-includes/pluggable.php on line 916

Warning: ini_set(): Cannot change zlib.output_handler – headers already sent in /home/micmed12/indidjinus/wp-content/plugins/wp-persistent-login/wp_persistent_login.php on line 168

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-content/plugins/wp-persistent-login/wp_persistent_login.php on line 179

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-content/plugins/wp-persistent-login/wp_persistent_login.php on line 180

Warning: Cannot modify header information – headers already sent by (output started at /home/micmed12/indidjinus/wp-content/plugins/bbp-private-groups/includes/management_info.php:3) in /home/micmed12/indidjinus/wp-content/plugins/unread-posts/classes/class-up-unread-posts-handler-cookie.php on line 125