I was planning to install "Brivium - Store Framework"
But it seem I can't install it. @Brivium
My advise for your situation is upload all files on Upload folder to your forum root and try to install again.
@Brivium same problem here.
Even with this step, it is failed.
Please make sure that you follow XenForo default installation progress that listed at https://xenforo.com/help/installation/