Estoy usando la plantilla avanzada Yii2, y cuando habilito una URL amigable en mi EC2 ubuntu 20 obtengo un Internal Server Error

Funciona bien en mi host local en Windows 10.

en mi directorio /var/www/html/frontend/ tengo esto en mi .htaccess

 <IfModule mod_rewrite.c> Options +FollowSymlinks RewriteEngine On </IfModule> <IfModule mod_rewrite.c> RewriteCond %{REQUEST_URI} ^/(admin) RewriteRule ^admin/assets/(.*)$ backend/web/assets/$1 [L] RewriteRule ^admin/css/(.*)$ backend/web/css/$1 [L] RewriteRule ^admin/js/(.*)$ backend/web/js/$1 [L] RewriteCond %{REQUEST_URI} !^/backend/web/(assets|js|css|js)/ RewriteCond %{REQUEST_URI} ^/(admin) RewriteRule ^.*$ backend/web/index.php [L] RewriteCond %{REQUEST_URI} ^/(assets|css|js|images) RewriteRule ^assets/(.*)$ frontend/web/assets/$1 [L] RewriteRule ^css/(.*)$ frontend/web/css/$1 [L] RewriteRule ^js/(.*)$ frontend/web/js/$1 [L] RewriteRule ^images/(.*)$ frontend/web/images/$1 [L] RewriteRule ^(.*)$ frontend/web/$1 [L] RewriteCond %{REQUEST_URI} !^/(frontend|backend)/web/(assets|css|js)/ RewriteCond %{REQUEST_URI} !index.php RewriteCond %{REQUEST_FILENAME} !-f [OR] RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^.*$ frontend/web/index.php </IfModule>

y en esta carpeta /var/www/html/frontend/web/ tengo esto en mi .htaccess

 Options +FollowSymLinks IndexIgnore */* RewriteEngine on # if a directory or a file exists, use it directly RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # otherwise forward it to index.php RewriteRule . index.php

y tengo esto en mi servidor en /etc/apache2/sites-available/000-default.conf

 <VirtualHost *:80> ServerAdmin webmaster@blabla.com ServerName blabla.com DocumentRoot /var/www/html/frontend/web ServerAlias blabla.com ErrorLog ${APACHE_LOG_DIR}/error.log CustomLog ${APACHE_LOG_DIR}/access.log combined <Directory /var/www/html/frontend/web> Options FollowSymlinks AllowOverride all Require all granted </Directory> </VirtualHost>

¿Alguna idea de lo que estoy haciendo mal aquí? Gracias