[🐛 Bug]: Starting from 4.19.0, the grid ui (console) requires a forward slash to load

[csgbn]

What happened?

Open localhost:4444/ui

Requires localhost:4444/ui/ to load UI which is a breaking change from previous releases.

How can we reproduce the issue?

Deploy a distributed grid like:

# To execute this docker-compose yml file use `docker-compose -f docker-compose-v3-full-grid.yml up`
# Add the `-d` flag at the end for detached execution
# To stop the execution, hit Ctrl+C, and then `docker-compose -f docker-compose-v3-full-grid.yml down`
version: "3"
services:
  selenium-event-bus:
    image: selenium/event-bus:latest
    container_name: selenium-event-bus
    ports:
      - "4442:4442"
      - "4443:4443"
      - "5557:5557"

  selenium-sessions:
    image: selenium/sessions:latest
    container_name: selenium-sessions
    ports:
      - "5556:5556"
    depends_on:
      - selenium-event-bus
    environment:
      - SE_EVENT_BUS_HOST=selenium-event-bus
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

  selenium-session-queue:
    image: selenium/session-queue:latest
    container_name: selenium-session-queue
    ports:
      - "5559:5559"

  selenium-distributor:
    image: selenium/distributor:latest
    container_name: selenium-distributor
    ports:
      - "5553:5553"
    depends_on:
      - selenium-event-bus
      - selenium-sessions
      - selenium-session-queue
    environment:
      - SE_EVENT_BUS_HOST=selenium-event-bus
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443
      - SE_SESSIONS_MAP_HOST=selenium-sessions
      - SE_SESSIONS_MAP_PORT=5556
      - SE_SESSION_QUEUE_HOST=selenium-session-queue
      - SE_SESSION_QUEUE_PORT=5559

  selenium-router:
    image: selenium/router:latest
    container_name: selenium-router
    ports:
      - "4444:4444"
    depends_on:
      - selenium-distributor
      - selenium-sessions
      - selenium-session-queue
    environment:
      - SE_DISTRIBUTOR_HOST=selenium-distributor
      - SE_DISTRIBUTOR_PORT=5553
      - SE_SESSIONS_MAP_HOST=selenium-sessions
      - SE_SESSIONS_MAP_PORT=5556
      - SE_SESSION_QUEUE_HOST=selenium-session-queue
      - SE_SESSION_QUEUE_PORT=5559

  chrome:
    image: selenium/node-chrome:latest
    shm_size: 2gb
    depends_on:
      - selenium-event-bus
    environment:
      - SE_EVENT_BUS_HOST=selenium-event-bus
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

  edge:
    image: selenium/node-edge:latest
    shm_size: 2gb
    depends_on:
      - selenium-event-bus
    environment:
      - SE_EVENT_BUS_HOST=selenium-event-bus
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443

  firefox:
    image: selenium/node-firefox:latest
    shm_size: 2gb
    depends_on:
      - selenium-event-bus
    environment:
      - SE_EVENT_BUS_HOST=selenium-event-bus
      - SE_EVENT_BUS_PUBLISH_PORT=4442
      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443




Open localhost:4444/ui

Relevant log output

UI not loading

Operating System

Linux

Selenium version

4.19.0

What are the browser(s) and version(s) where you see this issue?

Chrome 123

What are the browser driver(s) and version(s) where you see this issue?

NA

Are you using Selenium Grid?

4.19.0

[github-actions[bot]]

@csgbn, thank you for creating this issue. We will troubleshoot it as soon as we can.

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Thank you!

[VietND96]

Forward the question to this

most users usually access localhost:4444, it can redirect to ui In your case, lets open chrome dev tool, then access localhost:4444/ui, when the page is blank, is there any error in console or 404 request in network tab

[VietND96]

Update: /ui was changed to /ui/ in part of changes in JS stack 4.19.0 https://github.com/SeleniumHQ/selenium/commit/bbd59478af06ea060dac342e406434c54056eba3#diff-360388c710d883e15e1f0e7cd8b95c2fe6671d1d51ffcbe961bac0d07b56168aR53-R55