nginx proxy_pass with uri not working

The following proxy works elegantly resolving http://my.org/ to the proxied address:

location / {
  proxy_pass http://127.0.0.1:8082;
}

However, adding a name in the URI breaks things and results in a 404 error:

location /luigi/ {
  proxy_pass http://127.0.0.1:8082;
}

Also tried rewriting but to no avail:

location /luigi/ {
  rewrite ^/luigi/(.*)$ /$1 break;
  proxy_pass http://127.0.0.1:8082;
}

accesss.log:

myip - - [24/Jul/2020:16:56:36 -0400] "GET /luigi/ HTTP/1.1" 404 513 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0" "-"
myip - - [24/Jul/2020:16:56:36 -0400] "GET /error?src=404&ifr=1&error= HTTP/1.1" 404 153 "http://myurl/luigi/" "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0" "-"
myip - - [24/Jul/2020:16:56:47 -0400] "GET /luigi/ HTTP/1.1" 404 513 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0" "-"
myip - - [24/Jul/2020:16:56:47 -0400] "GET /error?src=404&ifr=1&error= HTTP/1.1" 404 153 "http://myurl/luigi/" "Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0" "-"

error.log:

2020/07/24 16:56:32 [notice] 107788#0: signal process started
2020/07/24 16:56:36 [error] 107789#0: *13 open() "/usr/share/nginx/html/error" failed (2: No such file or directory), client: myip, server: , request: "GET /error?src=404&ifr=1&error= HTTP/1.1", host: "myurl", referrer: "http://myurl/luigi/"
2020/07/24 16:56:47 [error] 107789#0: *13 open() "/usr/share/nginx/html/error" failed (2: No such file or directory), client: myip, server: , request: "GET /error?src=404&ifr=1&error= HTTP/1.1", host: "myurl", referrer: "http://myurl/luigi/"

Can anybody please help?

location ~ /luigi/(.*) {
    proxy_pass http://127.0.0.1:8082/$1;
}