500 Internal Server Error Nginx

Hi, I’m getting this error when I try to post using Delecious. I tried to submit test post on deliceois and got following error:

X
Testing ... 

ERROR (Post): Array
(
    [headers] => Array
        (
            [server] => nginx/1.8.1
            [date] => Fri, 02 Sep 2016 03:18:21 GMT
            [content-type] => text/html; charset=utf8
            [transfer-encoding] => chunked
            [connection] => close
        )

    [body] => 
    
    
    
    
    
    
    
Server Error

    
            An error occurred.  See the error logs for more information.
            (Turn debug on to display exception reports here)
            
    
    
    
    [response] => Array
        (
            [code] => 500
            [message] => Internal Server Error
        )

    [cookies] => Array
        (
        )

and this what I found in Log/History tab

Y:[2016-09-02 03:17:44] - [Error] [Delicious - ] - -=ERROR=- ERROR (Post): Array ( [headers] => Array ( [server] => nginx/1.8.1 [date] => Fri, 02 Sep 2016 03:18:21 GMT [content-type] => text/html; charset=utf8 [transfer-encoding] => chunked [connection] => close ) [body] => Server Error Server Error An error occurred. See the error logs for more information. (Turn debug on to display exception reports here) [response] => Array ( [code] => 500 [message] => Internal Server Error ) [cookies] => Array ( ) ) 
0

Please help.... Thanks!