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 ('7f40fcdac8f96762dab80e10c5fe3b24', -1, 1714015909, 1714015909, '039223cb', 4, 0, 0)

Line : 187
File : sessions.php