I have a problem with my forein keylaravel

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SQLSTATE[HY000]: General error: 1005 Can't create table krada.#sql-2d10_cc (errno: 150 "Foreign key constraint is incorrectly formed"
) (SQL: alter table posts add constraint posts_category_id_foreign foreign key (category_id) references categories (id) on dele
te cascade)

In Connection.php line 458:

SQLSTATE[HY000]: General error: 1005 Can't create table krada.#sql-2d10_cc (errno: 150 "Foreign key constraint is incorrectly formed"
)

via Chebli Mohamed