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 ('5b235403473a7febf7032c49fda0ee96', -1, 1730418238, 1730418238, '030f19fe', -1280, 0, 0)

Line : 195
File : sessions.php