I've created a page to download PDF files. It includes the following code:
<a href="https://revistamovimentto.com.br/wp-content/uploads/2017/10/Movimentto-Edição-88.pdf" download>
<img class="alignnone wp-image-291 size-medium" src="https://revistamovimentto.com.br/wp-content/uploads/2017/10/capa88-222x300.png"alt="" width="222" height="300" />
</a>
It creates an image that when clicked, should download the PDF https://revistamovimentto.com.br/wp-content/uploads/2017/10/Movimentto-Edição-88.pdf
However, clicking the link gives a page error not found instead of downloading the file. And the url is ok according to the media file.