PHPBB 3.0.8 weird error

No idea why it is repeating the template:

Check out the error here

It is a clean install of phpBB. The problem is not the style I have installed, the same problem occurs with 开发者_Python百科the default prosilver style.

Does the default prosilver theme look correct?

If so, you can check the index_body.html in the new theme you installed to see if it has more than one header/body/footer. If it does, it's probably the same way in all the templates. If not, it could be another MOD you installed.

Looks like all your pages are showing more than one html output.