phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('497b2567d2bb1e41f11af2f4c07e0027', -1, 1713870012, 1713870012, '12df20e6', -1, 0, 0)

Line : 187
File : sessions.php