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 ('1e53a867c4e0c44e2a5f121c3ebaa447', -1, 1713578453, 1713578453, '12dbecc7', 0, 0, 0)

Line : 187
File : sessions.php