Why doesn't .htaccess work?

Question

PHP

I use OpenServer, installed Yii2 version Basic 2.0.8, I wanted to make URLs more "beautiful", for this I created the following htaccess in the root of Yii2:

Option +FollowSymLinks
IndexIgnore */*
RewriteEngine on

RewriteCond %{REQUEST_URI} !^/(web)
RewriteRule ^assets/(.*)$ /web/assets/%1 [L]
RewriteRule ^css/(.*)$ /web/css/%1 [L]
RewriteRule ^js/(.*)$ /web/js/%1 [L]
RewriteRule ^images/(.*)$ /web/images/%1 [L]
RewriteRule ^fonts/(.*)$ /web/fonts/%1 [L]
RewriteRule (.*) /web/%1

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /web/index.php

In the web folder is the following:

RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule . index.php

I also uncommented the urlManager in the ./config/web.php file and added 'baseUrl' => '' to the request component.
After all this, when trying to access the site using any path, the following error occurs:

Server error!

The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script.

If you think this is a server error, please contact the webmaster.

Error 500

testsite
Apache