def METHOD_NAME(page, runtime, launch_app):
    msgs = wait_for_app(launch_app, button_app, page, runtime)
    expect(page.locator('pre:not([class])')).to_have_text('0')
    page.click('.bk-btn')
    expect(page.locator('pre:not([class])')).to_have_text('1')
    assert [msg for msg in msgs if msg.type == 'error' and 'favicon' not in msg.location['url']] == []