N00b problem :(

Hi Everyone, I've never used Playwright before and am just getting started.

I'm running on a Mac and trying to test a site on "localhost:3000". Unfortunately, I keep getting Error: page.goto: net::ERR_SSL_PROTOCOL_ERROR at https://localhost:3000/ when I try to access the page. The browser is Google Chrome.

I've read the docs. I put ignoreHTTPSErrors: true, in my playwright.config.js file. That doesn't make any difference.

Here is the test code I'm using (taken from example.spec.js):

test('Click Danzan Ryu', async ({ page }) => {
  await page.goto('https://localhost:3000');
  await page.getByRole('link', { name: 'Danzan Ryu' }).click();
});

What else should I do? Thank you, -T