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 ('df02f8db7a2eecafcaaecfb7356e4770', -1, 1748050537, 1748050537, '039353ea', 5, 0, 0)

Line : 190
File : sessions.php