phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a1b35a16ed6e0605817f5bbb3f151af8', -1, 1714517055, 1714517055, '12daa932', 0, 0, 0)

Line : 187
File : sessions.php