ajaxCall = PAGE
ajaxCall {
   typeNum = 22222
   config {
    disableAllHeaderCode = 1
    xhtml_cleaning = 0
    admPanel = 0
    additionalHeaders = Content-type: text/plain
    no_cache = 1
    debug = 0
   }
   10 = USER
   10 {
        userFunc = TYPO3CMSExtbaseCoreBootstrap->run
        extensionName = fefiles
        pluginName = Piphoto
        vendorName = Istar
        controller = Photo
        action = ajaxHandler
   }
}

TYPO3CMSExtbaseUtilityExtensionUtility::registerPlugin(
    $_EXTKEY,
    'Piphoto',
    'Upload Photo'
);

jQuery(function($) {
    $(".send-photo-comment").click(function (e) {
        e.preventDefault();
        $.ajax({
            type: "POST",
            url: "?id=0&type=22222",
            data: {},
            success: function(msg){
                console.log(msg);
            }
        });
    })
})

TYPO3CMSExtbaseUtilityExtensionUtility::configurePlugin(
    'Istar.' . $_EXTKEY,
    'Piphoto',
    [
        'Photo' => 'list, ajaxHandler, show, new, create, edit, update, delete',
    ],
    // non-cacheable actions
    [
        'Photo' => 'list, ajaxHandler, show, new, create, edit, update, delete',
    ]
);

Help me please)

TYPO3CMSExtbaseUtilityExtensionUtility::configurePlugin(
    'Istar.' . $_EXTKEY,
    'Piphoto,
    array(
        'Photo' => 'ajaxhandler'
    )
);

TYPO3CMSExtbaseUtilityExtensionUtility::configurePlugin(
  'YourVendor.' . $_EXTKEY,

  // Plugin name
  'Pi1',

  // An array of controller-action combinations. The first one found is the default one.
  array(
    'YourController' => 'index,new,create,edit,update'
  ),

  // An array of non-cachable controller-action-combinations (they must already be enabled)
  array(
    'YourController' => 'new,create,edit,update'
  )
);