Class 'MOONView' does not initialize its super class, 'WatchFace'

The code you started with is about 7 years old (I recall when Petr first did the video) and here's what you do:

add an initialize() function in your class

    function initialize() {
        WatchFace.initialize();
    }

The warning shouldn't hurt anything, but this is how to get rid of the warning.

Thanks a lot! It works.

Now I fixed the position of clock to center with dc.drawText(dc.getWidth()/2, 75

But I have no fixed wrong time\size\font have you any advices?

In the video, it shows how to create and add a custom font after you have the basics running.  Right now you are using FONT_NUMBER_MILD - a native number font - a small one.

Thank you for fast reply! you pointed my brain in the right direction!

Just one problem now with wrong time. Is this issue with old functions from 2016?

import Toybox.Graphics;
import Toybox.Lang;
import Toybox.System;
import Toybox.WatchUi;

class MOONView extends WatchUi.WatchFace {
    function initialize() {
        WatchFace.initialize();
    }
  
    var customFont = null;

    function onLayout(dc) {

        customFont = WatchUi.loadResource(Rez.Fonts.customFont);    
    }

    function onUpdate(dc) {
        dc.setColor(Graphics.COLOR_BLACK, Graphics.COLOR_BLACK);
        dc.clear();
        var clockTime = System.getClockTime();
        var hour = clockTime.hour;
        if (!System.getDeviceSettings().is24Hour) {
            hour = hour % 24;
            if (hour == 0) {
                hour = 12;
            }
        }
        dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_BLACK);
        dc.drawText(dc.getWidth()/2, 20, customFont, hour.toString(), Graphics.TEXT_JUSTIFY_RIGHT);
        dc.setColor(Graphics.COLOR_RED, Graphics.COLOR_BLACK);
        dc.drawText(dc.getWidth()/2, 20, customFont, hour.toString(), Graphics.TEXT_JUSTIFY_LEFT);
    }

    function onShow() {
    }

    function onHide() {
    }

    function onExitSleep() {
    }

    function onEnterSleep() {
    }
 

}

You are using hour.toString() on lines 30 and 32.  On line 32, you want to use clockTime.min.format("%02d") instead.

you are displaying the hour twice instead of HH MM