Warning: Undefined array key "action" in /customers/6/3/2/wsmethiopia.com/httpd.www/protected/controllers/AdminController.php on line 86

Fatal error: Uncaught Error: Method name must be a string in /customers/6/3/2/wsmethiopia.com/httpd.www/protected/controllers/AdminController.php:87
Stack trace:
#0 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/actions/CInlineAction.php(50): AdminController->actionAjax()
#1 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/CController.php(309): CInlineAction->runWithParams(Array)
#2 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/CController.php(287): CController->runAction(Object(CInlineAction))
#3 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/CController.php(266): CController->runActionWithFilters(Object(CInlineAction), Array)
#4 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/CWebApplication.php(276): CController->run('ajax')
#5 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/web/CWebApplication.php(135): CWebApplication->runController('admin/ajax')
#6 /customers/6/3/2/wsmethiopia.com/httpd.www/yiiframework/base/CApplication.php(162): CWebApplication->processRequest()
#7 /customers/6/3/2/wsmethiopia.com/httpd.www/index.php(28): CApplication->run()
#8 {main}
  thrown in /customers/6/3/2/wsmethiopia.com/httpd.www/protected/controllers/AdminController.php on line 87