MySQL表顺序正确，数据类型匹配，为什么我得到ERROR 1005（HY000）

I have several tables and several of them reference each other to create many-to-many relationships. I realize data types must match and table order matters when creating the foreign keys. I think I have all that accounted for. So why am I getting the ERROR 1005 (HY000) in the following:I have several tables and several of them refer