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 ('8e4e79734e5bc6f58aa9da25c3b99c6b', -1, 1713455146, 1713455146, '03858d06', 7, 0, 0)

Line : 187
File : sessions.php