phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('c0fcdd4831a3eb8cd51f357a98caf6fe', -1, 1715004736, 1715004736, '12bd027a', 2, 0, 0)

Line : 189
File : sessions.php