perl - Nginx rewrite all to index.pl -

i'm trying nginx serve index.pl url user enters

for example, want url https://www.example.me/723738 serve https://www.example.me/index.pl

i don't want use simple re-direct, because user must still have original url typed in address bar - perl script display url entered.

my problem request returns 502 gateway error cloudflare, i've been fiddling nginx config setting can't serve index.pl

here's relevant snippet of nginx settings

server{         listen       [::]:80 default_server;         server_name  _;         root         /usr/share/nginx/html;          rewrite ^.*$ /index.pl;          # load configuration files default server block.         include /etc/nginx/default.d/*.conf;          location / {         }          location ~ \.pl$ {             gzip off;             include /etc/nginx/fastcgi_params;             fastcgi_pass 127.0.0.1:9001;             fastcgi_index index.cgi;             fastcgi_param script_filename $document_root$fastcgi_script_name;         }           error_page 500 502 503 504 /50x.html;             location = /50x.html {         } } 

i appreciate help, thanks