php - No vendor folder after installing laravel using composer

Question

After I installed the laravel scaffolding according to the command provided by the official document (as shown below), I found that there is no vendor folder. I have tried composer install/update, but there is still no such folder (as shown in the second picture below) ,What is the situation here

-----------Patch:
The answer has been found. It turns out that the mbstring extension=php_mbstring.dll in php.ini needs to be enabled

Answer 1

As mentioned above, you lack expansion. Open your mbstring extension

Answer 2

If it doesn’t work, you can download the one-click installation package. That’s what I did yesterday
Address: http://download.laravelacadem...

Answer 3

It may be because of the need to circumvent the firewall. Does composer use domestic mirrors

Answer 4

An extension named mbstring is missing.
1. If you are using an integrated development environment, add the extension, or delete the extension in php.ini.
2. If there is no such extension, output php through phpinfo() For information, download one from the official website.