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 ('3ce8d1d5e24a955336051a11c32396e0', -1, 1713594940, 1713594940, '0389bc44', 3, 0, 0)

Line : 187
File : sessions.php