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 ('2e4d4c2d82cbe0643c35788a5a77fe98', -1, 1714516862, 1714516862, '0395ffa2', -8, 0, 0)

Line : 187
File : sessions.php