This page contains the following errors: error on line 8 at column 1: Extra content at the end of the document Below is a rendering of the page up to the first error.

Hi hugo,

As far as we understand you have an attachment that blocks your website loading. We couldn't access your website. 

I did the test and remove that image
even so it continues to generate error

delete the image
even so it continues to generate error

http://www.arquitectos.gtei.pe/planos/cuadro-de-valores-unitarios-oficiales-de-edificaciones-para-la-costa-sierra-selva/descargar-e-imprimir-en-pdf-y-cuadro-de-valores-unitarios/?type=rss2&forum=172&topic=41

This page contains the following errors:

Below is a rendering of the page up to the first error.

Hi @hugo,

Some plugins add an extra content in RSS feed body. It crashes XML syntax. If you check the Source of the RSS feed you'll found an extra content on top. Here is the screenshots:

Please deactivate plugins one by one and find the problem maker. This can also be current active WordPress theme component. In any case if you can't disable the problem maker plugins we recommend disable RSS feed in Forums > Settings > features admin page. This issue has no chance to be fixed from wpForo side.