1. Added to doctrine config in /di/doctrine.php

use Gedmo\Tree\TreeListener;

$evm = new EventManager();
$treeListener = new TreeListener();
$evm->addEventSubscriber($treeListener);

2. Define in DI \Psr\EventDispatcher\EventDispatcherInterface

3. Diff migration, migrate and clear cache-metadata

composer diff
composer migrate

4. Migration function

./vendor/bin/doctrine-migrations  migrations:generate

//for Mysql insert to migration

$this->addSql(<<<SQL
CREATE FUNCTION CONVERT_PRICE(
    `price` INT,
	`main_currency` VARCHAR(3),
	`convert_currency` VARCHAR(3)
) RETURNS double
    DETERMINISTIC
BEGIN
	IF (main_currency = convert_currency)
	THEN
		SET @result = price;
	ELSE
		SET @rate = (SELECT rate FROM catalog_currency_rate WHERE
			main = main_currency
			AND `convert` = convert_currency
		);
		SET @result = price * @rate;
	END IF;
RETURN @result;

END;
SQL);

composer migrate

5. Setting elfinder

Options

• disableEditProductCode bool
• allowedPerPage int
• productImageStorage string
• storageUploads array
• productFileStorage string
• thumbnailService array
• adminTemplateDir string
• editor array
  • productDescription
  • categoryDescription
  • categoryShortDescription
• allowedPerPage int[]
• sort string
• minSearchChars int
• showSubcategoryProducts bool
• delimiterOptions string
• allocatedMemoryDynamically bool
• currency array
  • default string
  • ratio array
• admin array
  • searchFields array