N8N duplicating url parts

[Luiz_Oliveira]

I have a self-hosted n8n instance running in a Docker container behind an Nginx reverse proxy, managed with Portainer.

My setup works almost perfectly, but I’m encountering an issue with URL generation. When I click to access a workflow folder or any subfolder, the n8n UI duplicates the subpath in the URL.

For example, when I click on a folder, the URL becomes:
https://clinify.testex.org/n8n/n8n/projects/iaG2RtvsvYUbBhgq/folders/W8OIEkj6B2YQnVoY/workflows

The correct path should be:
https://clinify.testex.org/n8n/projects/iaG2RtvsvYUbBhgq/folders/W8OIEkj6B2YQnVoY/workflows

This only happens in the URLs of folders and subfolders. Other links seem to work fine.

What am I doing wrong in my configuration?

Nginx Configuration (nginx/default.conf)

server {
    listen 80;
    listen [::]:80;
    server_name clinify.testex.org;

    location /.well-known/acme-challenge/ {
        root /usr/share/nginx/html;
        try_files $uri =404;
    }

    return 301 https://$host$request_uri;
}

# HTTPS server
server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;

    server_name clinify.testex.org;

    ssl_certificate     /etc/letsencrypt/live/clinify.testex.org/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/clinify.testex.org/privkey.pem;

    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
    ssl_prefer_server_ciphers on;
    ssl_ecdh_curve secp384r1;

    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8 8.8.4.4 valid=300s;
    resolver_timeout 5s;

    add_header X-Frame-Options DENY;
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;

    # --- Configuração n8n ---
    location /n8n/ {
  # 'proxy_pass' para a porta interna do contêiner do n8n
        proxy_pass http://n8n:5678/;
        
        # Headers essenciais para proxy de WebSocket e informações do cliente
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    # Esta nova regra é crucial para rotear requisições como /rest/config.js para o n8n
    # O `location` com regex `~ ^/n8n/(.*)$` é uma opção, mas o bloco anterior já é suficiente para as rotas da UI.
    # Vamos adicionar uma regra mais específica para a API e os ativos estáticos que não usam o prefixo /n8n
    location ~ ^/(rest|webhook|icons|js|css|img|fonts|templates|files)/ {
        proxy_pass http://n8n:5678;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    # Redirect para garantir que /n8n sempre vá para /n8n/
    location = /n8n {
        return 301 /n8n/;
    }

}

Portainer Stack (docker-compose.yml)

# --- Definição dos Serviços ---
services:
  # --- Redis Service (Cache e Fila) ---

  # --- n8n Service (Automação de Workflows) ---
  n8n:
    image: n8nio/n8n
    container_name: app_n8n
    restart: always
    ports:
      - "5678:5678"
    environment:
      # --- Configurações Gerais e de Performance ---
      N8N_TELEMETRY_ENABLED: false
      NODE_ENV: production
      GENERIC_TIMEZONE: America/Sao_Paulo
      TZ: America/Sao_Paulo
      N8N_PAYLOAD_SIZE_MAX: 16384
      N8N_FORMDATA_FILE_SIZE_MAX: 16384
      # NODE_FUNCTION_ALLOW_EXTERNAL: luxon
      NODE_FUNCTION_ALLOW_EXTERNAL: luxon, moment,lodash,moment-with-locales
      N8N_COMMUNITY_PACKAGES_ALLOW_TOOL_USAGE: true
      N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS: true
      
      # --- Configurações de Acesso e URL (ESSENCIAL) ---
      N8N_HOST: clinify.testex.org
      N8N_PORT: 5678
      N8N_PROTOCOL: https
      N8N_PATH: /n8n/
      N8N_EDITOR_BASE_URL: https://clinify.testex.org/n8n/
      WEBHOOK_URL: https://clinify.testex.org/n8n/
      N8N_SECURE_COOKIE: false # Mantenha 'false' se o Nginx gerencia o SSL e o n8n está em HTTP internamente
      VUE_APP_URL_BASE_API: https://clinify.testex.org/n8n/
      
      # --- Autenticação (ATENÇÃO: Login duplo ativado) ---
      N8N_USER_MANAGEMENT_ENABLED: true
      N8N_BASIC_AUTH_ACTIVE: true # Isso ativa um popup de login ANTES da tela de login do n8n. Considere desativar (false).
      N8N_BASIC_AUTH_USER: admin
      N8N_BASIC_AUTH_PASSWORD: 12345678 # <<<< MUDE ESTA SENHA!
      
      # --- Conexão com Banco de Dados PostgreSQL ---
      DB_TYPE: postgresdb
      DB_POSTGRESDB_HOST: postgres
      DB_POSTGRESDB_PORT: 5432
      DB_POSTGRESDB_DATABASE: clinify_db
      DB_POSTGRESDB_USER: clinify_user
      DB_POSTGRESDB_PASSWORD: 123456 # <<<< USE A MESMA SENHA DO POSTGRES!
      
      # --- Conexão com Redis para Filas (Modo Produção) ---
      QUEUE_HEALTH_CHECK_ACTIVE: 'true'
      QUEUE_REDIS_HOST: redis
      QUEUE_REDIS_PORT: 6379
      QUEUE_REDIS_PASSWORD: 1234 # <<<< USE A MESMA SENHA DO REDIS!

      # --- Integração Langsmith (Opcional) ---
      LANGSMITH_TRACING: 'true'
      LANGSMITH_ENDPOINT: "https://api.smith.langchain.com"
      LANGSMITH_API_KEY: "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"
      LANGSMITH_PROJECT: "pr-puzzled-macrame-100"
    volumes:
      - n8n_data:/home/node/.n8n
    networks:
      - clinify_network
    depends_on:
      - redis
      - postgres


  # --- Nginx Service (Proxy Reverso e Servidor Web) ---
  nginx:
    image: nginx:latest
    container_name: app_nginx
    restart: always
    ports:
      - "80:80"
      - "443:443"
    volumes:
      # Mapeamento dos arquivos de configuração e certificados do Nginx
      - /home/ubuntu/clinify-stack/nginx_config:/etc/nginx/conf.d
      - /home/ubuntu/clinify-stack/nginx_html:/usr/share/nginx/html
      - /etc/letsencrypt:/etc/letsencrypt:ro
    networks:
      - clinify_network
    depends_on:
      - n8n
      - evolution-api

Information on your n8n setup

• n8n version: 1.104.2
• Database: Postgres
• Running n8n via: docker with portainer
• Operating system: Ubuntu 24.04