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) VALUES ('7c7eb43c4f74777cd1988bce4c499ea0', -1, 1714442402, 1714442402, '12bf2b8c', 18, 0)

Line : 158
File : sessions.php