Make sure Composer is installed globally, as explained in the installation chapter of the Composer documentation.
Open a command console, enter your project directory and execute:
$ composer require softspring\polymorphic-form-type:^5.2Make sure Composer is installed globally, as explained in the installation chapter of the Composer documentation.
Open a command console, enter your project directory and execute:
$ composer require softspring\polymorphic-form-type:^5.2