admin.html, could not be found

Hey wait, you're an admin! We can tell you stuff.

There's an error message below and you can find more details in gallery3/var/logs (look for the file with the most recent date on it). Stuck? Stop by the Gallery 3 Forums and ask for help. You can also look at our list of open tickets to see if the problem you're seeing has been reported. If you post a request, here's some useful information to include:

Kohana_Exception [ Framework Error ]:
The requested views, admin.html, could not be found
SYSPATH/core/Kohana.php[ 806 ]

801 if ($found === NULL)
802 {
803 if ($required === TRUE)
804 {
805 // If the file is required, throw an exception
806 throw new Kohana_Exception('The requested :resource:, :file:, could not be found', array(':resource:' => __($directory), ':file:' =>$filename));
807 }
808 else
809 {
810 // Nothing was found, return FALSE
811 $found = FALSE;
SYSPATH/libraries/View.php[ 83 ] » Kohana_Core::find_file( arguments )

SYSPATH/libraries/View.php[ 49 ] » View_Core->set_filename( arguments )

MODPATH/gallery/libraries/MY_View.php[ 62 ] » View_Core->__construct( arguments )

MODPATH/gallery/libraries/Admin_View.php[ 30 ] » View->__construct( arguments )

MODPATH/user/controllers/admin_users.php[ 22 ] » Admin_View_Core->__construct( arguments )

{PHP internal call} » Admin_Users_Controller->index()

MODPATH/gallery/controllers/admin.php[ 62 ] » call_user_func_array( arguments )

{PHP internal call} » Admin_Controller->__call( arguments )

SYSPATH/core/Kohana.php[ 331 ] » ReflectionMethod->invokeArgs( arguments )

{PHP internal call} » Kohana_Core::instance( arguments )

SYSPATH/core/Event.php[ 208 ] » call_user_func_array( arguments )

APPPATH/Bootstrap.php[ 67 ] » Event_Core::run( arguments )

DOCROOT/index.php[ 102 ] » require( arguments )

How can i solve the issue? Any one can help me?