Laravel 5.3 到 5.4 (mPdf - niklasravnsborg/laravel-pdf) 升级问题
ErrorException in PdfServiceProvider.php line 28:
Missing argument 2 for niklasravnsborg\LaravelPdf\PdfServiceProvider::niklasravnsborg\LaravelPdf{closure}(), called in C:\xamp\htdocs\laravel\vendor\laravel\framework\src\Illuminate\Container\Container.php on line 678 and defined