wordpress- pages not showing [duplicate]

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http://serverfault.com – This question is an exact duplicate of: Wordpress pages are not working properly? I am having some problem with my wordpress. When I create a new page in wordpress the page gets saved but when try to access that page it show "500 Internal Server Error" Can anyone please help me out with this. I am using LEMP server and having some wordpress sites installed on that. For instance you can check: http://www.freebulkseotools.com/blog/ The article is there on home page but when try to access that post the server throws an exception "500 I (HowTos)