Add null check for config in getCardSize and connectedCallback methods

Author: cociweb

package.json

@@ -1,6 +1,6 @@
 {
   "name": "lawn-mower-card",
-  "version": "1.4.1",
+  "version": "1.4.2",
   "type": "module",
   "description": "Lawn Mower cleaner card for Home Assistant Lovelace UI",
   "main": "dist/lawn-mower-card.js",

src/lawn-mower-card.ts

@@ -84,6 +84,9 @@ export class LawnMowerCard extends LitElement {
   }
 
   public getCardSize(): number {
+    if (!this.config) {
+      return 3;
+    }
     return this.config.compact_view ? 3 : 8;
   }
 
@@ -106,6 +109,9 @@ export class LawnMowerCard extends LitElement {
 
   public connectedCallback() {
     super.connectedCallback();
+    if (!this.config) {
+      return;
+    }
     if (!this.config.compact_view && this.map) {
       this.requestUpdate();
       this.thumbUpdater = setInterval(