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 ('cc6ed85125b65e42671e8a0ca2905f5c', -1, 1713521423, 1713521423, '12761efd', 7, 0, 0)

Line : 187
File : sessions.php