Bugfix/fix error handling for missing market prices (#1023)

* Add fallback for missing market price

* Update changelog

CHANGELOG.md

@@ -18,6 +18,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Upgraded `Nx` from version `14.1.4` to `14.3.5`
 - Upgraded `storybook` from version `6.4.22` to `6.5.9`
 
+### Fixed
+
+- Improved the error handling of missing market prices
+
 ## 1.160.0 - 15.06.2022
 
 ### Fixed

apps/api/src/app/portfolio/portfolio.service.ts

@@ -394,7 +394,7 @@ export class PortfolioService {
         continue;
       }
 
-      const value = item.quantity.mul(item.marketPrice);
+      const value = item.quantity.mul(item.marketPrice ?? 0);
       const symbolProfile = symbolProfileMap[item.symbol];
       const dataProviderResponse = dataProviderResponses[item.symbol];
 
@@ -658,7 +658,7 @@ export class PortfolioService {
         netPerformancePercent: position.netPerformancePercentage?.toNumber(),
         quantity: quantity.toNumber(),
         value: this.exchangeRateDataService.toCurrency(
-          quantity.mul(marketPrice).toNumber(),
+          quantity.mul(marketPrice ?? 0).toNumber(),
           currency,
           userCurrency
         )