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 ('aec710f9f5242053de474b7d876bf104', -1, 1730418596, 1730418596, '03905669', -1280, 0, 0)

Line : 195
File : sessions.php