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 ('be88e62547aa9402d67025f094fd2097', -1, 1709029092, 1709029092, '2cd24d49', -7, 0, 0)

Line : 187
File : sessions.php