Incorrect implementation of \Shieldon\Psr17\RequestFactory::createRequest

[kiklop74]

This is the official interface declaration from psr/http-factory

namespace Psr\Http\Message;

interface RequestFactoryInterface
{
    /**
     * Create a new request.
     *
     * @param string $method The HTTP method associated with the request.
     * @param UriInterface|string $uri The URI associated with the request. If
     *     the value is a string, the factory MUST create a UriInterface
     *     instance based on it.
     *
     * @return RequestInterface
     */
    public function createRequest(string $method, $uri): RequestInterface;
}

As you can is in the comment for $uri parameter it can be either string or UriInterface. Your implementation assumes string only. I think it should be fixed.