Fix the insecure mixed content error in a Laravel production instance.

insecure-mixed-content-laravel-prod.md

Insecure or Mixed Content Production Laravel

Make sure your AppServiceProvider.php file has a boot function that looks like this to avoid the was not allowed to run insecure content error in production:

use Illuminate\Support\Facades\URL;

/**
 * Bootstrap any application services.
 *
 * @return void
 */
public function boot()
{
    if (config('app.env') === 'production') {
        URL::forceScheme('https');
    }
}