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 ('73a28a4d4540fd3e90419cc693561af5', -1, 1748716157, 1748716157, '0394e3c5', -9, 0, 0)

Line : 190
File : sessions.php