MySQL tables, error #1064 & error #1068 Multiple primary key defined

I have got errors when I tried to install the MySQL tables, error:

"#1064 - You have an error in your SQL syntax"

and error:

"#1068 - Multiple primary key defined "

This is the database:

CREATE TABLE messages (
msg_id INT PRIMARY KEY AUTO_INCREMENT,
message VARCHAR(200),
uid_fk INT(10),
ip VARCHAR(45),
created INT(10),
uploads VARCHAR(50),
profile_uid INT(10)

PRIMARY KEY (`msg_id`),
KEY `uid_fk` (`uid_fk`)

);


CREATE TABLE comments (
com_id INT PRIMARY KEY AUTO_INCREMENT,
comment VARCHAR(200),
msg_id_fk INT(10),
uid_fk INT(10),
ip VARCHAR(45),
created INT(10),

PRIMARY KEY (`com_id`),
KEY `msg_id_fk` (`msg_id_fk`),
KEY `uid_fk` (`uid_fk`)

);


CREATE TABLE likes (
like_id INT PRIMARY KEY AUTO_INCREMENT,
msg_id_fk INT(10),
uid_fk INT(10),

PRIMARY KEY (`like_id`),
KEY `msg_id_fk` (`msg_id_fk`),
KEY `uid_fk` (`uid_fk`)

);


CREATE TABLE user_uploads (
id INT PRIMARY KEY AUTO_INCREMENT,
image_path VARCHAR(500),
uid_fk INT(10),

PRIMARY KEY (`id`),
KEY `uid_fk` (`uid_fk`)

);


CREATE TABLE follow_user (
fid INT PRIMARY KEY AUTO_INCREMENT,
uid_fk INT(10),
following_uid INT(10),

PRIMARY KEY (`fid`),
KEY `uid_fk` (`uid_fk`)

);

these are the errors images:

How to fix it?

Either use the inline syntax (msg_id INT PRIMARY KEY AUTO_INCREMENT) or declare it afterwards (PRIMARY KEY (com_id)), not both : they conflict.