beyondcode / laravel-favicon

src/helpers.php

<?php

use BeyondCode\LaravelFavicon\Generators\FaviconGenerator;

if (! function_exists('favicon')) {
    function favicon($image)
    {
        if (app(FaviconGenerator::class)->shouldGenerateFavicon(app()->environment())) {

The method environment() does not exist on Illuminate\Container\Container. Are you sure you never get this type here, but always one of the subclasses?

            return rtrim(config('app.url'), '/').'/'.config('favicon.url_prefix')."/$image";
        }

        return $image;
    }
}