This might help, in order to get that popular, syntax is OK response back from Nginx, I had to add '$uri' to the sample Nginx configuration in Statamic v2.10.7

Before:

location / {
        try_files $try_files; # Use the dynamically assigned locations from above.
    }

After:

location / {
        try_files $uri $try_files; # Use the dynamically assigned locations from above.
    }

And all was well with Nginx once again.