Internal error has occured ... access error 500

Very much appreciate this! Thank so much

How Shlink is set up on docker-compose.yml

version: '3'

services:
  shlink-app:
    container_name: ${CONTAINER_NAME:-shlink}-app
    image: ghcr.io/shlinkio/shlink:stable
    environment:
      DEFAULT_DOMAIN: ${DOMAIN_NAME}
      BASE_PATH: /url
      PORT: ${PORT:-8080}
      TIMEZONE: America/Regina
      GEOLITE_LICENSE_KEY: ${GEOLITE_LICENSE_KEY}
      DB_DRIVER: postgres
      DB_USER: ${POSTGRES_USER:-shlink}
      DB_NAME: ${POSTGRES_DB:-shlink}
      DB_PASSWORD: ${POSTGRES_PASSWORD:-shlink}
      DB_HOST: ${POSTGRES_HOST:-shlink-db}
      DB_PORT: ${POSTGRES_PORT:-5432}
      INITIAL_API_KEY: ${INITIAL_API_KEY}
    restart: unless-stopped
    depends_on:
      - shlink-db
    labels:
      - "traefik.enable=true"
      - "traefik.docker.network=traefik_proxy"

      - "traefik.http.services.${CONTAINER_NAME:-shlink}.loadbalancer.server.port=${PORT:-8080}"       
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}.entrypoints=web"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}.rule=Host(`${DOMAIN_NAME}`) && PathPrefix(`/url`)"

      # use to redirect http to https
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}.middlewares=https-redirect"
      - "traefik.http.middlewares.https-redirect.redirectscheme.scheme=https"

      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-secure.entrypoints=websecure"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-secure.rule=Host(`${DOMAIN_NAME}`) && PathPrefix(`/url`)"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-secure.tls.certresolver=tlsresolver"    
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-secure.tls=true"

      - "traefik.http.middlewares.https-sslheaders.headers.accessControlAllowCredentials=true"
      - "traefik.http.middlewares.https-sslheaders.headers.forceSTSHeader=true"
      - "traefik.http.middlewares.https-sslheaders.headers.browserxssfilter=true"
      - "traefik.http.middlewares.https-sslheaders.headers.stsIncludeSubdomains=true"
      - "traefik.http.middlewares.https-sslheaders.headers.stsPreload=true" 

      # Enable CORS headers
      #- "traefik.http.middlewares.cors.headers.accessControlAllowCredentials=true"
      #- "traefik.http.middlewares.cors.headers.accessControlExposeHeaders=*"
      - "traefik.http.middlewares.cors.headers.accesscontrolallowmethods=GET,PUT,DELETE,PATCH"
      #- "traefik.http.middlewares.cors.headers.accesscontrolallowmethods=*"
      - "traefik.http.middlewares.cors.headers.accesscontrolalloworiginlist=*"
      - "traefik.http.middlewares.cors.headers.accesscontrolmaxage=100"
      - "traefik.http.middlewares.cors.headers.addvaryheader=true"

      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-secure.middlewares=https-sslheaders,cors"

    networks:
      - traefik_proxy
      - internal

  shlink-web:
    container_name: ${CONTAINER_NAME:-shlink}-web
    image: ghcr.io/shlinkio/shlink-web-client
    labels:
      - "traefik.enable=true"
      - "traefik.docker.network=traefik_proxy"

      - "traefik.http.services.${CONTAINER_NAME:-shlink}-web.loadbalancer.server.port=80"       
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web.entrypoints=web"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web.rule=Host(`${DOMAIN_NAME}`) && PathPrefix(`/${CONTAINER_NAME:-shlink}`)" 

      # use to redirect http to https
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web.middlewares=https-redirect"
      - "traefik.http.middlewares.https-redirect.redirectscheme.scheme=https"

      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web-secure.entrypoints=websecure"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web-secure.rule=Host(`${DOMAIN_NAME}`) && PathPrefix(`/${CONTAINER_NAME:-shlink}`)"
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web-secure.tls.certresolver=tlsresolver"    
      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web-secure.tls=true"

      - "traefik.http.routers.${CONTAINER_NAME:-shlink}-web-secure.middlewares=https-sslheaders,strip-prefix"
    networks:
      - traefik_proxy
    depends_on:
      - shlink-app
    restart: unless-stopped
    profiles: 
      - web

  shlink-db:
    image: postgres:15-alpine
    container_name: ${CONTAINER_NAME:-shlink}-db
    restart: unless-stopped
    volumes:
      - ./data/postgres:/var/lib/postgresql/data
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-shlink}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-shlink}
      POSTGRES_DB: ${POSTGRES_DB:-shlink}
    networks:
      - internal

networks:
  traefik_proxy:
    external: true
  internal:
    driver: bridge
    internal: true
    attachable: false

Summary

When I go to https://example.com/url/whoami the browser returns "An unexpected error occurred" and the log returns

[2023-05-08T14:13:06.716891-06:00] [22e85b08-96ed-491e-9551-48bf0a5996e2] Access.ERROR - - "GET /url/whoami HTTP/1.1" 500 28

Current behavior

When I go to https://example.com/url/whoami the browser returns "An unexpected error occurred" and the log returns

[2023-05-08T14:13:06.716891-06:00] [22e85b08-96ed-491e-9551-48bf0a5996e2] Access.ERROR - - "GET /url/whoami HTTP/1.1" 500 28

after refreshing the page of the brower it forwards to the correct page. ie: https://example.com/whoam/

and the log shows:

[2023-05-08T14:14:59.404806-06:00] [41bc9c74-6e37-4352-a110-25db9d270729] Access.INFO - - "GET /url/whoami HTTP/1.1" 302 0

When I use curl the same thing happens the first time and then subsequent times all is good.

curl -X 'GET' \ 'https://example.com/url/rest/v3/short-urls/whoami' \ -H 'accept: application/json' \ -H 'X-Api-Key: REDACTED'

Returns: {"title":"Internal Server Error","type":"https://shlink.io/api/error/internal-server-error","status":500,"detail":"An unknown error occurred."}

enter same again:

curl -X 'GET' \ 'https://example.com/url/rest/v3/short-urls/whoami' \ -H 'accept: application/json' \ -H 'X-Api-Key: REDACTED'

returns:

{"shortCode":"whoami","shortUrl":"https://example.com/url/whoami","longUrl":"https://example.com/whoami/","deviceLongUrls":{"android":null,"ios":null,"desktop":null},"dateCreated":"2023-05-08T14:09:54-06:00","tags":[],"meta":{"validSince":null,"validUntil":null,"maxVisits":null},"domain":null,"title":null,"crawlable":false,"forwardQuery":true,"visitsSummary":{"total":11,"nonBots":11,"bots":0},"visitsCount":11}

Suspecting that because of this error I am not able to connect to https://example.com/url on https://app.shlink.io

Expected behavior

should go directly the appropriator link without refreshing page. Curl should return information the first time.

How to reproduce

Use docker compose and create a link https://example.com/url/whoami that redirects to https;//example.com/whoami/

shlinkio / shlink