Nginx Config for serving Laravel from within a subdirectory of Wordpress

I’m having an nginx problem. I have a WordPress installation and I’m trying to serve a laravel app from a subdirectory.

home/foo/var/www/html is WP home/foo/var/www/html/app is Laravel home/foo/var/www/html/app/public is what I want to serve

My current config (written after searching this forum and StackOverflow):

server {
        listen 80;
        listen [::]:80;

        root /home/foo/var/www/html;
        index index.php index.html index.htm;

        server_name foo.com www.foo.com;

        if (!-e $request_filename) {
            rewrite ^.*$ /index.php last;
        }

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

        location = /favicon.ico { log_not_found off; access_log off; }
        location = /robots.txt { log_not_found off; access_log off; allow all; }
        location ~* \.(css|gif|ico|jpeg|jpg|js|png)$ {
            expires max;
            log_not_found off;
        }

        location ~ \.php$ {
            fastcgi_split_path_info ^(.+?\.php)(/.*)$;
            fastcgi_pass   unix:/run/php/php7.2-fpm.sock;
            fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO $fastcgi_path_info;
            fastcgi_index  index.php;
            include        fastcgi_params;
        }

        location ^~ /app {
                alias home/foo/var/www/html/app/public;
                try_files $uri $uri/ @app;

                location ~ /app/.+\.php$ {
                        fastcgi_split_path_info ^(/app/.+?\.php)(/.*)$;
                        fastcgi_pass   unix:/run/php/php7.2-fpm.sock;
                        fastcgi_param  SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_param  PATH_INFO $fastcgi_path_info;
                        fastcgi_index  index.php;
                }
        }

        location @app {
                rewrite /app/(.*)$ /app/index.php?/$1 last;
        }

        location ~ /\.ht {
                deny all;
        }

}

can anyone tell me what i’m doing incorrectly?