A large number of redirects after the site transfer. How to fix?

Question

1C-Bitrix

The site was transferred to Bitrix.
The admin panel opens normally, but the site itself gives an error:
"The site redirected too many times.
Tell me how to fix it? What to check?
Hosting, domain and PHP version were changed (from 5 to 7).
Hosting is normal, not vds.
.htaccess cleaned from unnecessary redirects, now it looks like this.

Options -Indexes
ErrorDocument 404 /404.php



<IfModule mod_php7.c>
  php_flag allow_call_time_pass_reference 1
  php_flag session.use_trans_sid off

  #php_value display_errors 1

  #php_value mbstring.internal_encoding UTF-8
</IfModule>

<IfModule mod_rewrite.c>
  Options +FollowSymLinks
  RewriteEngine On
  RewriteBase /
  

  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-l
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !/bitrix/urlrewrite.php$
  RewriteRule ^(.*)$ /bitrix/urlrewrite.php [L]

  RewriteRule .* - [E=REMOTE_USER:%{HTTP:Authorization}]

</IfModule>

<IfModule mod_dir.c>
  DirectoryIndex index.php index.html
</IfModule>

<IfModule mod_expires.c>
  ExpiresActive on
  ExpiresByType image/jpeg "access plus 3 day"
  ExpiresByType image/gif "access plus 3 day"
</IfModule>

Answer 1

Disable the composite site and clear the Bitrix cache. this should solve the problem.