Why can't I include SVG?

Question

WordPress

Unable to load svg file.
Writes this error: "logo-black.svg Sorry, this file type is not allowed for security reasons."
The code seems to be correct.

add_filter( 'upload_mimes', 'upload_allow_types' );
function upload_allow_types( $mimes ) {
  // разрешаем новые типы
  $mimes['svg']  = 'text/plain'; // image/svg+xml
  // отключаем имеющиеся
  unset( $mimes['mp4a'] );
  return $mimes;
}

Answer 1

Figured it out, no longer relevant.