Nginx multiple root redirect issue - redirect

Question

I've the following configuration which works well:
root /var/www/en;
location / {
try_files $uri $uri/ /index.php?$args;
}
location /admin {
try_files $uri $uri/ /admin/index.php;
}
location ~ \.php(/|\?|$) {
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME
$document_root$fastcgi_script_name;
fastcgi_param COCKPIT_URL_REWRITE On;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_index index.php;
}
This redirects all requests to index.php and to admin/index.php for the admin backend.
Now I need to put a copy of the website in a different language to subdirectory having the same redirect rules for the subdirectory. This is actually a separate project with a separate root folder. I'm doing it the following way:
location ~ ^/de {
root /var/www/de;
try_files $uri $uri/ /de/index.php?$args;
}
location ~ ^/de/admin {
root /var/www/de;
try_files $uri $uri/ /de/admin/index.phpd;
}
However, this leads to the following nginx error:
rewrite or internal redirection cycle while internally redirecting to "/de/index.php"
How this could be fixed?
Thanks ;)
UPDATE:
I managed to get static files working by changing root to alias. So, now I can access static files site.com/de/test.txt. However, when I try to access site.com/de/ php handler is not working and browser tries to download the php file. I put php handler inside the new location block but it still not working.

Answer 1

Try this
location ~ \.php(/|\?|$) {
location /de {
root /var/www/de;
try_files $uri $uri/ /de/index.php?$args;
}
location /de/admin {
root /var/www/de;
try_files $uri $uri/ /de/admin/index.php;
}
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME
$document_root$fastcgi_script_name;
fastcgi_param COCKPIT_URL_REWRITE On;
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_index index.php;
}