Fix undefined GameModel and loading gamemodel when no gamesystems defined

app/SaveProject.js

@@ -54,10 +54,15 @@ class SaveProject {
     }
     static loadGamesystems(projectDir) {
         const gamesystemDir = path.join(projectDir, "gamesystems");
+        if (fs.existsSync(gamesystemDir)) {
             const loadedGamesystems = this.loadGamesystemsRecursively(gamesystemDir);
             console.log("LoadedGamesystems: ", loadedGamesystems.length);
             return loadedGamesystems;
         }
+        else {
+            return [];
+        }
+    }
     static loadGamesystemsRecursively(gamesystemDir) {
         let loadedGamesystems = [];
         const gamesystemFileNames = fs.readdirSync(gamesystemDir);

app/SaveProject.ts

@@ -62,9 +62,13 @@ export class SaveProject {
 
   static loadGamesystems(projectDir: string): LoadModel[] {
     const gamesystemDir = path.join(projectDir, "gamesystems");
+    if(fs.existsSync(gamesystemDir)) {
       const loadedGamesystems = this.loadGamesystemsRecursively(gamesystemDir);
       console.log("LoadedGamesystems: ", loadedGamesystems.length);
       return loadedGamesystems;
+    } else {
+      return []
+    }
   }
 
   static loadGamesystemsRecursively(gamesystemDir: string): LoadModel[] {

src/app/app.component.ts

@@ -42,6 +42,9 @@ export class AppComponent implements OnInit{
               private dialog: MatDialog
   ) {
     console.log('APP_CONFIG', APP_CONFIG);
+    if(this.gameModel == undefined)  {
+      this.gameModel = new GameModel("Unknown GameModel")
+    }
 
     if (electronService.isElectron) {
       console.log(process.env);