Install Yii2 extension manually without using Composer

Question

I want to install Select 2 extension widget manually with Yii2 Framework without using composer.

I done the following steps but it\'s not working.

1)

Answer 1

It is subrepository .GIT , delete .git from vendor\kartik-v\yii2-widget-select2 and git rm --cached yii2-widget-select2

Stash, Commit,Push.