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 ('cde68a9b45da0a01b9b80e16c301f09a', -1, 1714041103, 1714041103, '038a21b2', -4, 0, 0)

Line : 187
File : sessions.php