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 ('1a842edd09c73f64ee7cb4bc29826c49', -1, 1711660593, 1711660593, '2cc8b38a', -4, 0, 0)

Line : 187
File : sessions.php