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 ('7e9b975d8b84ff334988fa631bf3c6e3', -1, 1761348019, 1761348019, 'd849d8af', 2, 0, 0)

Line : 172
File : sessions.php