[Bug]: playwright-test MCP server with browser.newContext() fails

[EikeSchwass]

Version

1.58.2

Steps to reproduce

1. Clone https://github.com/EikeSchwass/PlaywrightMCPNewBrowserContext
2. Execute tool generate_setup_page of the Playwright-test MCP Server (npx playwright run-test-mcp-server)

Expected behavior

Tool result: Success:

Running 1 test using 1 worker
### Paused at end of test. ready for interaction

### Page state
- Page URL: about:blank
- Page Title:
- Page Snapshot:

Actual behavior

Tool result: Error:

Running 1 test using 1 worker
TypeError: Cannot read properties of undefined (reading 'initialize')
Error while running the seed test.

Additional context

The only info I had was the cryptic "TypeError: Cannot read properties of undefined (reading 'initialize')".
If creation of new browser contexts is not supported by the MCP server, that should be documented somewhere.
In that case, this would be a feature request^^

Environment

System:
    OS: Windows 11 10.0.26100
    CPU: (8) x64 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz
    Memory: 6.40 GB / 31.69 GB
  Binaries:
    Node: 18.20.8 - C:\Program Files\nodejs\node.EXE
    npm: 10.8.2 - C:\Program Files\nodejs\npm.CMD
  IDEs:
    VSCode: 1.109.2 - C:\Program Files\VS Code\bin\code.CMD
  Languages:
    Bash: 5.2.32 - C:\Windows\system32\bash.EXE
  npmPackages:
    @playwright/test: 1.58.2 => 1.58.2
    playwright: 1.58.2 => 1.58.2

[Skn0tt]

Hi! test-mcp is currently tightly integrated with the default page fixture, and the agent won't be able to access your newly created context. The error message comes from the fact that your code doesn't use this page fixture. Let me see if I can improve that error message!