500 Internal Server Error on Admin page only

[Arpitmittalsqr]

Hi,

I'm getting 500 Internal Server Error from last 10-15 Days on the Admin page, While the store is working fine.. Please help it's urgent.

Error logs- 

2016-11-21T00:55:02+00:00 ERR (3): Warning: simplexml_load_string(): (null)Entity: line 206: error: (null)                <item_id>  in /nfs/c11/h08/mnt/205895/domains/fleurish.in/html/lib/Varien/Simplexml/Config.php on line 510
2016-11-21T00:55:02+00:00 ERR (3): Warning: simplexml_load_string():                         ^  in /nfs/c11/h08/mnt/205895/domains/fleurish.in/html/lib/Varien/Simplexml/Config.php on line 510
2016-11-21T00:55:02+00:00 ERR (3): Warning: simplexml_load_string(): Entity: line 206: parser error : Extra content at the end of the document  in /nfs/c11/h08/mnt/205895/domains/fleurish.in/html/lib/Varien/Simplexml/Config.php on line 510
2016-11-21T00:55:02+00:00 ERR (3): Warning: simplexml_load_string():                 <item_id>  in /nfs/c11/h08/mnt/205895/domains/fleurish.in/html/lib/Varien/Simplexml/Config.php on line 510
2016-11-21T00:55:02+00:00 ERR (3): Warning: simplexml_load_string():                         ^  in /nfs/c11/h08/mnt/205895/domains/fleurish.in/html/lib/Varien/Simplexml/Config.php on line 510

Please help, it's urgent.

Thank you

[Mukesh Tiwari]

Hi @Arpitmittalsqr

Was there any code deployed recently? Any custom module?

It seems some XML file related problem.