[PrestaShopException]

Validation function not found. isUrl4Smpl
at line 960 in file classes/ObjectModel.php

954. 
955. 		// Check field validator
956. 		if (!in_array('validate', $skip) && !empty($data['validate']))
957. 		{
958. 			if (!method_exists('Validate', $data['validate']))
959. 				throw new PrestaShopException('Validation function not found. '.$data['validate']);
960. 
961. 			if (!empty($value))
962. 			{
963. 				$res = true;
964. 				if (Tools::strtolower($data['validate']) == 'iscleanhtml')