Improve error handling

apps/api/src/services/exchange-rate-data.service.ts

@@ -58,8 +58,8 @@ export class ExchangeRateDataService {
       if (!this.currencies[pair]) {
         // Not found, calculate indirectly via USD
         this.currencies[pair] =
-          resultExtended[`${currency1}${Currency.USD}`][date].marketPrice *
+          resultExtended[`${currency1}${Currency.USD}`]?.[date]?.marketPrice *
-          resultExtended[`${Currency.USD}${currency2}`][date].marketPrice;
+          resultExtended[`${Currency.USD}${currency2}`]?.[date]?.marketPrice;
 
         // Calculate the opposite direction
         this.currencies[`${currency2}${currency1}`] = 1 / this.currencies[pair];

apps/client/src/app/pages/admin/admin-page.component.ts

@@ -97,6 +97,7 @@ export class AdminPageComponent implements OnInit {
   }
 
   public formatDistanceToNow(aDateString: string) {
+    if (aDateString) {
       const distanceString = formatDistanceToNow(
         sub(parseISO(aDateString), { seconds: 10 }),
         {
@@ -109,6 +110,9 @@ export class AdminPageComponent implements OnInit {
         : distanceString;
     }
 
+    return '';
+  }
+
   public ngOnDestroy() {
     this.unsubscribeSubject.next();
     this.unsubscribeSubject.complete();