Add a foreign index does not work

[Dri372]

Describe the bug No change ad no error when I created a foreign index on 2 existing tables.

To Reproduce • Fresh new install (with postgresql) • Create 2 tables ◦ constructors ▪ name text ◦ cars ▪ constructor_id bigint ▪ model text • Modify table cars to add a foreign index on constructor_id to constructors / id ◦ → Success but nothing is created

Additional info • Migration generated is empty public function up() { try {

    } catch (PDOException $ex) {