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) VALUES ('b498e31369b9e38197b5346b30dcec21', -1, 1714710720, 1714710720, '030efddd', -7, 0)

Line : 158
File : sessions.php