mysql table creation Error Code: 1005 in this specific case - mysql

Question

I have tried everything in solving this issue and yes I know that this type of question is already asked here but I could not solve my issue
It is mysql database
Error Code: 1005
Can't create table '.\project\comments.frm' (errno: 150)
the foreign keys are matching in structure (i.e length and type) then what can be the possible problem in the table creation
Table which is giving error is comments:
CREATE TABLE `comments`(
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`description` VARCHAR(100) NOT NULL,
`user_id` INT(10) UNSIGNED NOT NULL,
`post_id` INT(10) UNSIGNED NOT NULL,
FOREIGN KEY (`post_id`) REFERENCES `posts`.`id`,
FOREIGN KEY (`user_id`) REFERENCES `users`.`id`,
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=latin1;`
Here is posts table which is already created in the databas
CREATE TABLE `posts` (
`id` int(10) unsigned NOT NULL auto_increment,
`title` varchar(30) default NULL,
`description` longtext,
`image` varchar(50) default NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
Here is the users table which is also already created in the database
CREATE TABLE `users` (
`id` int(10) unsigned NOT NULL auto_increment,
`user_name` varchar(33) default NULL,
`email` varchar(255) NOT NULL,
`password` varchar(255) default NULL,
`type` varchar(255) NOT NULL,
`registrationDate` date NOT NULL,
PRIMARY KEY (`id`,`email`,`type`)
)

Answer 1

Your syntax is incorrect. The REFERENCES keyword should be followed by table (columns):
CREATE TABLE `comments`(
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`description` VARCHAR(100) NOT NULL,
`user_id` INT(10) UNSIGNED NOT NULL,
`post_id` INT(10) UNSIGNED NOT NULL,
FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`),
FOREIGN KEY (`user_id`) REFERENCES `users` (`id`),
PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=latin1;