droidopedia on "how to solve Server error 500?"

i'm having issues with crawling my site with google webmaster it shows 2500+ my links where google bot can't reach? they send me 2 emails for warning, how do i solve this issue and 1 more thing when i'm using fetch as google it shows up like this:
my page is:
http://www.droidopedia.com/privacy-policy-and-dmca/
it doesn't fetch it shows error
when i fetched it like this removed the last (/)
http://www.droidopedia.com/privacy-policy-and-dmca
it said redirected..?? what should i do?