fix

src/app.service.ts

@@ -14,6 +14,7 @@ import {
 } from './draw-text/draw-text-options';
 import { CardDataService } from './card-data/card-data.service';
 import _ from 'lodash';
+import { BlankReturnMessageDto } from 'nesties';
 
 @Injectable()
 export class AppService extends ConsoleLogger {
@@ -142,7 +143,15 @@ export class AppService extends ConsoleLogger {
     };
 
     const filterType = (type: number) =>
-      ydk.main.filter((id) => cardDataMap[id].type === type);
+      ydk.main.filter((id) => {
+        if (!cardDataMap[id]) {
+          throw new BlankReturnMessageDto(
+            404,
+            `Card ID ${id} has invalid data`,
+          ).toException();
+        }
+        return cardDataMap[id].type === type;
+      });
     await drawCards(filterType(1), Coordinates.main.monsters);
     this.log(`Filled monster cards.`);
     await drawCards(filterType(2), Coordinates.main.spells);