Pimcore E-Commerce framework configuration

Hi, I am new to pimcore, so I hope you understand my confusion.
I was trying to install the pimcore/demo according to
documentation. The fresh pimcore demo itself runs just fine, then I try installing the
E-commerce framework bundle and when I activate it, I get the following error in the modal in admin panel.

Failed to run assets:install command. Please run command manually.

The command “’/usr/bin/php’ ‘/projects/pimcore/project/bin/console’ ‘assets:install’ ‘web’ ‘–symlink’ ‘–relative’” failed.

Exit Code: 255(Unknown error)

And any page I refresh, I get

There is no extension able to load the configuration for “pimcore_ecommerce_framework” (in /projects/skeleton/app/config/ecommerce/ecommerce.yml). Looked for namespace “pimcore_ecommerce_framework”, found “framework”, “security”, “twig”, “monolog”, “swiftmailer”, “doctrine”, “sensio_framework_extra”, “cmf_routing”, “presta_sitemap”, “scheb_two_factor”, “debug”, “web_profiler”, “pimcore”, “pimcore_admin”, “pimcore_generator”, “app” in /projects/skeleton/app/config/ecommerce/ecommerce.yml (which is being imported from “/projects/skeleton/app/config/ecommerce”).

The same problem occurs with pimcore/skeleton, when I add any configuration for pimcore_ecommerce_framework