if you use my install script I create it for you

Please forgive all my dumb questions and bad posts; this forum is new to me, and I am not a coder by trade, I am more of a hardware guy.

i did not see that it is working now. Yes you can adjust the size (as suggested in the documentation) by adding a few lines to your custom.css file:

.MMM-EmbedURL .embed .embeded {
    width: 800px;
    height: 400px;
}

The only thing i think is left that can cause the problems is that not electron is used to display the mirror.

Edit:
Did not see that it is working now. Please read my other post about sizing instead

you placed it around the words 'your configuration ', which was supposed to mean the content of the config.js on you MagicMirror installation

/* MagicMirror² Config Sample
 *
 * By Michael Teeuw https://michaelteeuw.nl
 * MIT Licensed.
 *
 * For more information on how you can configure this file
 * see https://docs.magicmirror.builders/configuration/introduction.html
 * and https://docs.magicmirror.builders/modules/configuration.html
 */
let config = {
  electronOptions: {
    webPreferences: {
      webviewTag: true,
    }
  },
	address: "192.168.1.40", 	// Address to listen on, can be:
							// - "localhost", "127.0.0.1", "::1" to listen on loopback interface
							// - another specific IPv4/6 to listen on a specific interface
							// - "0.0.0.0", "::" to listen on any interface
							// Default, when address config is left out or empty, is "localhost"
	port: 8080,
	basePath: "/", 	// The URL path where MagicMirror² is hosted. If you are using a Reverse proxy
					// you must set the sub path here. basePath must end with a /
	ipWhitelist: ["192.168.1.40", "127.0.0.1", "::ffff:127.0.0.1", "::1"], 	// Set [] to allow all IP addresses
															// or add a specific IPv4 of 192.168.1.5 :
															// ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.1.5"],
															// or IPv4 range of 192.168.3.0 --> 192.168.3.15 use CIDR format :
															// ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.3.0/28"],

	useHttps: false, 		// Support HTTPS or not, default "false" will use HTTP
	httpsPrivateKey: "", 	// HTTPS private key path, only require when useHttps is true
	httpsCertificate: "", 	// HTTPS Certificate path, only require when useHttps is true

	language: "en",
	locale: "en-US",
	logLevel: ["INFO", "LOG", "WARN", "ERROR"], // Add "DEBUG" for even more logging
	timeFormat: 12,
	units: "english",
	// serverOnly:  true/false/"local" ,
	// local for armv6l processors, default
	//   starts serveronly and then starts chrome browser
	// false, default for all NON-armv6l devices
	// true, force serveronly mode, because you want to.. no UI on this device

	modules: [
		
		{
			module: "clock",
			position: "top_left",
			config: {
			timeFormat: "12",
			displaySeconds: "false",
			showPeriod: "true"
				}
		},		
        {
    module: "MMM-Bring",
    position: "bottom_bar",
    config: {
       email: 'xxxxxx@xxxx.com',
       password: 'xxxxxx',
       updateInterval: 1, // in Minutes
       listName: "Costco", // optional
       showListName: false,
       activeItemColor: "#EE524F",
       latestItemColor: "#4FABA2",
       showLatestItems: false,
       maxItems: 0,
       maxLatestItems: 0,
       locale: "en-US",
       useKeyboard: false,
       customTitle: "Costco List", // optional
       listDropdown: false
    }
},
{
		module: "MMM-CalendarWeek",
		position: "middle_center",	// This can be any of the regions. Best results in bottom region.
		config: {
	colored: true,
	coloredSymbolOnly: false,
	maximumNumberOfDays: 21,
	maximumDaysPerLine: 7,
	wrapEvents: true,
	showEndDate: true,
	calendars: [
		{
			url: 'https://calendar.google.com/calendar/ical/xxxxxxgmail.com/public/basic.ics',
			symbol: 'calendar',
			auth: {
			    user: 'xxxxxxxx',
			    pass: 'xxxxxxxx',
			    method: 'basic'
			}
		},
	],
}
},
{
  module: "MMM-EmbedURL",
  position: "top_right",
  header: "Current Weather",
  config: {
    embedElementType: "webview",
    basicElementType: "div",
    updateInterval: 120,
    attributes: [
        "frameborder=0",
    ],
      embed: [
        "https://www.wunderground.com/dashboard/pws/KVTCAMBR4?cm_ven=localwx_pwsdash"
    ]
  },
},
	]
};

/*************** DO NOT EDIT THE LINE BELOW ***************/
if (typeof module !== "undefined") {module.exports = config;}

Is there any way to make the window Wider or Longer? Or is it this size because of the region it is set in?

see this

"something"

vs this
“something”

copy/paste of the second will cause bad config message

@TK421_VT to use the code wrapper

paste your text in the message editor, select it all
the hit the button above the edit that looks like </>

note the code wrapper tag MUST start and end on a blank line…

I setup a new environment today and tested your configuration. There are a few issues with it i did not see cause you did not use the code signs to paste your configuration in the forum.
Please use the
```
YOUR CONFIGURATION
```

which results in

YOUR CONFIGURATION

next time.

First thing is that you set the basicElementType and embedElementType in the wrong level. They need to be set as child object of config.

The second problem is that you use a wrong time of double quotes. It looks like your editor uses a wired type of encoding.

“

is not the same as

"

With the following config everything works well:

/* Magic Mirror Config Sample
 *
 * By Michael Teeuw https://michaelteeuw.nl
 * MIT Licensed.
 *
 * For more information on how you can configure this file
 * see https://docs.magicmirror.builders/getting-started/configuration.html#general
 * and https://docs.magicmirror.builders/modules/configuration.html
 */
let config = {
	electronOptions: {
		webPreferences: {
			webSecurity: false,
			webviewTag: true,
		},
		fullscreen: true,
		alwaysOnTop: false
	},
	// ignoreXOriginHeader: true,
	// ignoreContentSecurityPolicy: true,
	address: "192.168.1.1", // Address to listen on, can be:
	// - "localhost", "127.0.0.1", "::1" to listen on loopback interface
	// - another specific IPv4/6 to listen on a specific interface
	// - "0.0.0.0", "::" to listen on any interface
	// Default, when address config is left out or empty, is "localhost"
	port: 8080,
	basePath: "/", // The URL path where MagicMirror is hosted. If you are using a Reverse proxy
	// you must set the sub path here. basePath must end with a /
	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1", "10.18.8.0/24"], // Set [] to allow all IP addresses
	// or add a specific IPv4 of 192.168.1.5 :
	// ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.1.5"],
	// or IPv4 range of 192.168.3.0 --> 192.168.3.15 use CIDR format :
	// ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.3.0/28"],

	useHttps: false, // Support HTTPS or not, default "false" will use HTTP
	httpsPrivateKey: "", // HTTPS private key path, only require when useHttps is true
	httpsCertificate: "", // HTTPS Certificate path, only require when useHttps is true

	language: "de",
	locale: "de-DE",
	logLevel: ["INFO", "LOG", "WARN", "ERROR"], // Add "DEBUG" for even more logging
	timeFormat: 24,
	units: "metric",
	// serverOnly:  true/false/"local" ,
	// local for armv6l processors, default
	//   starts serveronly and then starts chrome browser
	// false, default for all NON-armv6l devices
	// true, force serveronly mode, because you want to.. no UI on this device

	modules: [
		{
			module: "clock",
			position: "top_center",
		},
		{
			module: "MMM-EmbedURL",
			position: "top_right",
			header: "Current Weather",
			config: {
				embedElementType: "webview",
				basicElementType: "div",
				updateInterval: 120,
				attributes: [
					"frameborder=0",
				],
				embed: [
					“https://www.wunderground.com/dashboard/pws/KVTCAMBR4?cm_ven=localwx_pwsdash”
				]
			},
		},
		{
			module: "MMM-Touch",
			position: "bottom_center",
			config: {
				debug: true,
				useDisplay: false,
				defaultMode: "default",
				gestureCommands: {
					default: {
						TAP_1: (commander) => {
							commander.sendNotification("USER_PRESENCE", true);
						},
						PRESS_1: (commander) => {
							commander.sendNotification("SCREEN_TOGGLE", { forced: true });
						},
						SWIPE_UP_1: (commander) => {
							commander.sendNotification("SCREEN_ON", { forced: true });
						},
						SWIPE_DOWN_1: (commander) => {
							commander.sendNotification("SCREEN_OFF", { forced: true });
						},
						SWIPE_LEFT_1: (commander) => {
							commander.sendNotification("PROFILE_INCREMENT_HORIZONTAL", null);
						},
						SWIPE_RIGHT_1: (commander) => {
							commander.sendNotification("PROFILE_DECREMENT_HORIZONTAL", null);
						}
					}
				}
			}
		},
	]
};

/*************** DO NOT EDIT THE LINE BELOW ***************/
if (typeof module !== "undefined") {
	module.exports = config;
}

that’s weird.
Do you still have Webview enabled in the config with:

electronOptions: {
  webPreferences: {
    webviewTag: true,
  }
},

it still doesn’t load anything in the top right region.

This is what is in the module section in the config file

Any other thoughts?

your config looks good.
There is one last thing we can try. Can you please use your IP address (the one of the Pi) instead of localhost at the address setting.

You can get your IP either by hovering over the network icon in the top right corner of the screen or by entering

ip a

in the shell.

I had this changed for some other modules in my config cause of Cross-Origin problems and it is the only thing that is different in my setup.

This is at the beginning of the config file:

let config = {
electronOptions: {
webPreferences: {
webviewTag: true,
}
},
address: “localhost”, // Address to listen on, can be:

Then this in the module:

{
module: “MMM-EmbedURL”,
position: “top_right”,
header: “Current Weather”,
embedElementType: “webview”,
basicElementType: “div”,
config: {
updateInterval: 120,
attributes: [
“frameborder=0”,
],
embed: [
“https://www.wunderground.com/dashboard/pws/KVTCAMBR4?cm_ven=localwx_pwsdash”
]
},
},

this is what I see in the terminal log:

[16.12.2022 21:55.38.765] [ERROR] (node:57092) electron: Failed to load URL: https://www.wunderground.com/dashboard/pws/KVTCAMBR4?cm_ven=localwx_pwsdash with error: ERR_BLOCKED_BY_RESPONSE

I don’t have a start-up script running yet, I manually launch it with: npm run start as I am still configuring things.

Is there something I am missing as to why I should?

embedElementType: “webview”

I am guessing I run Requestly on the PI itself on the default Browers? I don’t currently have Firefox or Chrome loaded on it (not that it is that hard to install).

Honestly, I have no idea if I am running in Server Mode. I install the basic 64 bit PI OS. I am guessing that is not the Server Mode?

I tried adding WebView to the Config file with no change:

{
module: “MMM-EmbedURL”,
position: “top_right”,
header: “Current Weather”,
config: {
updateInterval: 120,
attributes: [
“frameborder=0”,
],
embedElementType: “webview”,
embed: [
“https://www.wunderground.com/dashboard/pws/KVTCAMBR4?cm_ven=localwx_pwsdash”
]
},
},

Thoughts?