`cy.task('setupMetamask')` failed with ECONNREFUSED 127.0.0.1:9222 ("before all" hook) about synpress HOT 2 OPEN

By the way, "error in Cypress cli output" above is that for the second feature (I haven't committed the other one in the reference setup repo); for the first one it seems to differ from time to time, but now it's

1. Wishlist
   "before all" hook for "Seeing the wishlist button":
   CypressError: cy.screenshot() timed out waiting 30000ms to complete.

Because this error occurred during a before all hook we are skipping all of the remaining tests.
at http://localhost:58865/__cypress/runner/cypress_runner.js:149497:81
at tryCatcher (http://localhost:58865/__cypress/runner/cypress_runner.js:18744:23)
at http://localhost:58865/__cypress/runner/cypress_runner.js:13866:41
at tryCatcher (http://localhost:58865/__cypress/runner/cypress_runner.js:18744:23)
at Promise._settlePromiseFromHandler (http://localhost:58865/__cypress/runner/cypress_runner.js:16679:31)
at Promise._settlePromise (http://localhost:58865/__cypress/runner/cypress_runner.js:16736:18)
at Promise._settlePromise0 (http://localhost:58865/__cypress/runner/cypress_runner.js:16781:10)
at Promise._settlePromises (http://localhost:58865/__cypress/runner/cypress_runner.js:16857:18)
at _drainQueueStep (http://localhost:58865/__cypress/runner/cypress_runner.js:13451:12)
at _drainQueue (http://localhost:58865/__cypress/runner/cypress_runner.js:13444:9)
at ../../node_modules/bluebird/js/release/async.js.Async._drainQueues (http://localhost:58865/__cypress/runner/cypress_runner.js:13460:5)
at Async.drainQueues (http://localhost:58865/__cypress/runner/cypress_runner.js:13330:14)

I've also tried adding

userAgent: "synpress",
chromeWebSecurity: true,
defaultCommandTimeout: 30000,
pageLoadTimeout: 30000,
requestTimeout: 30000,

to config but it doesn't help.

Also, commenting out this feature doesn't affect the initial issue.

from synpress.

Another thing to note is, Metamask doesn't get configured in its Chrome tab, like it used to be. Presumably the network issue is not being connect to Playwright.

Oh, yeah! Looking for 9222 in Playwright repo, I've found a discussion which suggested that the browser should be run with the --remote-debugging-port=9222 option. Googling a little more, I've found that some suggest to set it via env (CYPRESS_REMOTE_DEBUGGING_PORT=9222). I've added it to my Cypress env, and the problem is gone!

But I don't have answers to these questions:

• why it was working previously without this?
• what value is used otherwise? none? how can I look it up?

I've also assumed that I may have set this env var at some point earlier when I was tinkering Cucumber/Cypress/Synpress and that has somehow cached and applied after I've clean up my setup. But when I've set this variable, run, removed it and run again, I get the errors again, so this doesn't seem to be a valid hypothesis.

from synpress.