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 ('ead32091e68e7196a96e91b37e0bcd7c', -1, 1730432233, 1730432233, '03916b01', -1, 0, 0)

Line : 195
File : sessions.php