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 ('1c675a68c28d7a6f6a341dc33ad5125d', -1, 1714006068, 1714006068, '12d9b62d', 0, 0, 0)

Line : 187
File : sessions.php