[42000][1064] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use

I have created tables like before, with the given primary and foreign keys. However I get this error when I try to create a new table with the code below.

create table Order (
    oid int(255),
    sid int(255),
    sku int(255),
    quantity int(255),
    foreign key (sid) references Suppliers(sid),
    foreign key (sku) references Parts(sku),
    primary key(sid,sku)
)

and I have created Suppliers and Parts tables with the code below

create table Parts(
    sku int(255) auto_increment primary key,
    pname varchar(255),
    stock_level int(255),
    color varchar(255)
)

create table  Suppliers (
    sid int(255) auto_increment primary key,
    sname varchar(255),
    city varchar(255),
    street varchar(255)
)

sid and sku already exist in their respective tables. I do not understand why I get such an error.
The complete output is:

[42000][1064] You have an error in your SQL syntax; check the manual
that corresponds to your MySQL server version for the right syntax to
use near ‘Order( oid int (255), sid int (255), sku int(255), quantity
i’ at line 1