How to initialze an appium android driver on version 4.0.0 with selenium 3.141.0

I can't find any documentation outlining how to initialize an appium android driver. I had this test somewhat working with appium 3.0.0.2 and selenium 3.11 but then received the following error when trying to find an element by class name:

OpenQA.Selenium.InvalidSelectorException: 'Locator Strategy 'css selector' is not supported for this session

Ideally I don't want to go back to an older version of selenium as I already have a set of working tests using 3.14. This is my test at the moment, and I cant find clear documentation telling me how to implement an appium driver in C#.

        public void androidTest()
        {
            AndroidDriver<AndroidElement> driver;
            DesiredCapabilities cap = new DesiredCapabilities();
            cap.SetCapability("deviceName", "myName");
            cap.SetCapability("platformName", "Android");
            cap.SetCapability("automationName", "UiAutomator2");
            cap.SetCapability("appPackage", "myPackage");
            cap.SetCapability("appActivity", "myActivity");

            Uri url = new Uri("http://127.0.0.1:4723/wd/hub");

            driver = new AndroidDriver<IWebElement>(url, cap);

            driver.Manage().Timeouts().ImplicitWait = TimeSpan.FromSeconds(10);

            driver.FindElementByName("android.widget.EditText").SendKeys("testString");


        }

I get the following two error messages

Argument 1: cannot convert from 'System.Uri' to 'OpenQA.Selenium.Remote.ICommandExecutor'

Argument 2: cannot convert from 'OpenQA.Selenium.Remote.DesiredCapabilities' to 'OpenQA.Selenium.DriverOptions' ArenaTests

What arguments do I need to pass into this constructor to get this setup working?