mysql - Error 1215 foreign key constraint -

i'm still new this, have patience while learn rules. i'm having issues mysql script, gives me common 1215 error (cannot create foreign key)

i've checked data types, , foreign keys reference primary keys, , still isn't working.

must declare this:

must declare first foreign key:

create table(id ... , foreignkey int not null,  constraint foreign key(foreignkey) references  table_refered(it primary key));

// foreignkey- must declare first column , , after declare foreign key luck.

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