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 ('8f5c67c9980c91c93d88685966d8b949', -1, 1752690295, 1752690295, 'd849d8fc', 2, 0, 0)

Line : 189
File : sessions.php