[Bitrix\Main\ArgumentTypeException] 
The value of an argument 'signedValue' must be of type string (100)
/var/www/www-bars/data/www/bars.su/bitrix/modules/main/lib/security/sign/signer.php:156
#0: Bitrix\Main\Security\Sign\Signer->unsign(NULL, string)
	/var/www/www-bars/data/www/brp.bars.su/ajax/form.php:12