phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO oka_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('3a0e0b27572282d60249154e41bd724c', -1, 1550508051, 1550508051, '22e473d8', 1, 0)

Line : 184
File : /home/c128/public_html/talk/includes/sessions.php