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 ('abad9a1d5c81249425e3d1c93db97f4b', -1, 1751588363, 1751588363, 'd849d804', 40, 0, 0)

Line : 190
File : sessions.php