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 ('335a2010bba1cb188b46c6c276f42f7f', -1, 1749017820, 1749017820, '03104bb5', 2, 0, 0)

Line : 190
File : sessions.php