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 ('690e1dfb1a5b2154c12ad8b60d4ec3ec', -1, 1713567328, 1713567328, '12d8bea7', -4, 0, 0)

Line : 187
File : sessions.php