Error with Oauth in Gmail - OAuth Redirect URL did not match

Questions
,
1

Describe the problem/error/question

I’m trying to connect n8n to Gmail and I get an error because the OAuth Redirect URL did not match but they are the same.

This is the config for the credentials in Google

image
image692×195 9.74 KB

And this is the config for the Google credentials in n8n

image
image1062×328 19.1 KB

What is the error message (if any)?

image
image564×195 13.7 KB

Information on your n8n setup

  • n8n version: 1.18.2
  • Database (default: SQLite): PostgreSQL
  • n8n EXECUTIONS_PROCESS setting (default: own, main): default
  • Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
  • Operating system: Ubuntu
2

Hey @lqdominguez,

Sadly it looks like Google doesn’t think the URLs are the same which is unusual.

Can you share the env options you are using for n8n? I wonder if one of them is causing an issue.

3

Hi @Jon,

This is my docker-compose

version: "3"

services:
  traefik:
    image: "traefik"
    restart: always
    command:
      - "--api=true"
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"
      - "--entrypoints.web.http.redirections.entryPoint.to=websecure"
      - "--entrypoints.web.http.redirections.entrypoint.scheme=https"
      - "--entrypoints.websecure.address=:443"
      - "--certificatesresolvers.mytlschallenge.acme.tlschallenge=true"
      - "--certificatesresolvers.mytlschallenge.acme.email=${SSL_EMAIL}"
      - "--certificatesresolvers.mytlschallenge.acme.storage=/letsencrypt/acme.json"
    ports:
      - "80:80"
      - "443:443"
    volumes:
      # - ${DATA_FOLDER}/letsencrypt:/letsencrypt
      - traefik_data:/letsencrypt
      - /var/run/docker.sock:/var/run/docker.sock:ro

  n8n:
    image: n8nio/n8n
    restart: always
    ports:
      - "127.0.0.1:5678:5678"
    labels:
      - traefik.enable=true
      - traefik.http.routers.n8n.rule=Host(`${SUBDOMAIN}.${DOMAIN_NAME}`)
      - traefik.http.routers.n8n.tls=true
      - traefik.http.routers.n8n.entrypoints=web,websecure
      - traefik.http.routers.n8n.tls.certresolver=mytlschallenge
      - traefik.http.middlewares.n8n.headers.SSLRedirect=true
      - traefik.http.middlewares.n8n.headers.STSSeconds=315360000
      - traefik.http.middlewares.n8n.headers.browserXSSFilter=true
      - traefik.http.middlewares.n8n.headers.contentTypeNosniff=true
      - traefik.http.middlewares.n8n.headers.forceSTSHeader=true
      - traefik.http.middlewares.n8n.headers.SSLHost=${DOMAIN_NAME}
      - traefik.http.middlewares.n8n.headers.STSIncludeSubdomains=true
      - traefik.http.middlewares.n8n.headers.STSPreload=true
    environment:
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER
      - N8N_BASIC_AUTH_PASSWORD
      - N8N_USER_MANAGEMENT_DISABLED=true
      - N8N_HOST=${SUBDOMAIN}.${DOMAIN_NAME}
      - N8N_PORT=5678
      - N8N_PROTOCOL=https
      - NODE_ENV=production
      - NODE_OPTIONS="--max-old-space-size=262144" # set node memory limit
      - WEBHOOK_URL=https://${SUBDOMAIN}.${DOMAIN_NAME}/
      - GENERIC_TIMEZONE=${GENERIC_TIMEZONE}
      - EXECUTIONS_DATA_PRUNE=true
      - EXECUTIONS_DATA_MAX_AGE=168
      - EXECUTIONS_DATA_PRUNE_MAX_COUNT=10000
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST=${POSTGRES_HOST}
      - DB_POSTGRESDB_PORT=${POSTGRES_PORT}
      - DB_POSTGRESDB_DATABASE=${POSTGRES_DB}
      - DB_POSTGRESDB_USER=${POSTGRES_USER}
      - DB_POSTGRESDB_PASSWORD=${POSTGRES_PASSWORD}
      - DB_POSTGRESDB_SSL_REJECT_UNAUTHORIZED=false
    volumes:
      # - ${DATA_FOLDER}/.n8n:/home/node/.n8n
      - n8n_data:/home/node/.n8n
      - /local-files:/files

  express:
    build: ./expressjs
    restart: "always"
    ports:
      - "3000:3000"

volumes:
  traefik_data:
    external: true
  n8n_data:
    external: true
4

Hi @Jon, did you see anything in the config that could be causing the error?

5

I removed and recreated the credentials two or three times and finally is working. Thanks for your help @Jon.