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 ('1124141c38291fdd79b2e25e99323eb7', -1, 1714265364, 1714265364, '0a020003', -9, 0, 0)

Line : 187
File : sessions.php