Why command “php artisan serve” not working

Question

I started Laravel at this path:

C:\\Users\\Mad\\Work\\trunk\\product\\backend\\v1.2.1\\laravel

but it is not working, it is not starting. <

Answer 1

Your missing some Server Requirements

See the Laravel site for requirements. Laravel Documentation
The Laravel framework has a few system requirements.

If you are not using Homestead, you will need to make sure your server meets the following requirements:

PHP >= 7.1.3
BCMath PHP Extension
Ctype PHP Extension
JSON PHP Extension
Mbstring PHP Extension
OpenSSL PHP Extension
PDO PHP Extension
Tokenizer PHP Extension
XML PHP Extension

To see a list of your extensions... From the command line:
$ php -m

I was missing BCMath and Tokenizer so I installed them with:
$ sudo apt-get install php-bcmath
$ sudo apt-get install php-tokenizer

Now you can use $ php artisan serve