Reference: https://docs.tangible.one/modules/plugin-framework
Use the function tangible, inside or after the plugins_loaded action hook, to get the latest version of the framework.
require_once __DIR__.'/vendor/tangible/plugin-framework/index.php';
add_action('plugins_loaded', function() {
$framework = tangible();
$framework->register_plugin([
// ..Plugin config..
]);
});