Error 1S160/2 After Moving Over to NGINX

[thefarang]

I just moved everything over from Apache2 to NGINX and everything seems to work except I cannot log into the Admin section.  I get the following error when I try to access https://www.mysite.com/admin/:

Sorry, there is a problem

The page you requested does not exist
Error code: 1S160/2

I do see the 404 in the access logs.  

If I type in https://www.mysite.com/admin/index.php it redirects me to https://www.mysite.com/login/?error=&ref= gives me a login page.  When I login in, it redirects me to the homepage of the forum.  Returning to https://www.mysite.com/admin/index.php redirects me to the login page again.  

I've tried this on several different browsers.  Even on mobile using FireFox Focus to eliminate any browser cache issues.  

If I shut down NGINX and fire up Apache2 again, no problems, I can log in.  

Here's the relevant part of my NGINX config file (I was trying to keep it absolute minimal until I got everything working - I'll add in compression, restrictions, etc later):

        index index.php;

        location / {
                try_files $uri /index.php?$args;
         }

        location ~ \.php$ {
                try_files $uri =404;
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_param SCRIPT_FILENAME $request_filename;
                fastcgi_pass unix:/var/run/php-fpm/php7.2-fpm.sock;
                fastcgi_index index.php;
                include fastcgi_params;
         }

Any thoughts?  

[thefarang]

Just an update in case anyone else has this issue.  

I changed:

try_files $uri /index.php?$args;

to 

try_files $uri $uri/ /index.php;

I can log into /admin now.  Not sure everything is working yet (still testing) but that overcomes the first hurdle 🙂