create table default data for integer

[kojirock5260]

CREATE TABLE `orders`
(
	`id` INTEGER(11) UNSIGNED NOT NULL AUTO_INCREMENT,
	`user_id` INTEGER(11) UNSIGNED,
	`price` INTEGER(11) UNSIGNED NOT NULL DEFAULT 0,
	`created_on`  timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
	`modified_on` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
	PRIMARY KEY (`id`)
)ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci;

Notice Error...

Notice Error: Uninitialized string offset: 0 in [/path/to/vendor/vimeo/php-mysql-engine/src/Parser/CreateTableParser.php, line 936]

[muglug]

Thanks!