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 ('41854db6c03a02243c05c71770c2ffcc', -1, 1747554761, 1747554761, '12e09511', 2, 0, 0)

Line : 190
File : sessions.php