I have the same mistake,you can execute this sql script,it's work fine
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for request_sql
-- ----------------------------
DROP TABLE IF EXISTS `request_sql`;
CREATE TABLE `request_sql` (
`id_request_sql` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(200) NOT NULL,
`sql` text NOT NULL,
PRIMARY KEY (`id_request_sql`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of request_sql
-- ----------------------------
-- ----------------------------
-- Table structure for required_field
-- ----------------------------
DROP TABLE IF EXISTS `required_field`;
CREATE TABLE `required_field` (
`id_required_field` int(11) NOT NULL AUTO_INCREMENT,
`object_name` varchar(32) NOT NULL,
`field_name` varchar(32) NOT NULL,
PRIMARY KEY (`id_required_field`),
KEY `object_name` (`object_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of required_field
-- ----------------------------