diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c20027c8..637da61e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Extended the _X-ray_ page by a summary
 
+### Fixed
+
+- Fixed an exception in the caching of the portfolio snapshot in the portfolio calculator
+
 ## 2.126.1 - 2024-12-07
 
 ### Added
diff --git a/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts b/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
index 6c0d230b0..3f53ee04b 100644
--- a/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
+++ b/apps/api/src/app/portfolio/calculator/twr/portfolio-calculator.ts
@@ -101,6 +101,7 @@ export class TWRPortfolioCalculator extends PortfolioCalculator {
       totalInterestWithCurrencyEffect,
       totalInvestment,
       totalInvestmentWithCurrencyEffect,
+      errors: [],
       historicalData: [],
       totalLiabilitiesWithCurrencyEffect: new Big(0),
       totalValuablesWithCurrencyEffect: new Big(0)
diff --git a/libs/common/src/lib/models/portfolio-snapshot.ts b/libs/common/src/lib/models/portfolio-snapshot.ts
index e51931711..46bd5c18f 100644
--- a/libs/common/src/lib/models/portfolio-snapshot.ts
+++ b/libs/common/src/lib/models/portfolio-snapshot.ts
@@ -13,7 +13,7 @@ export class PortfolioSnapshot {
   @Type(() => Big)
   currentValueInBaseCurrency: Big;
 
-  errors?: AssetProfileIdentifier[];
+  errors: AssetProfileIdentifier[];
 
   hasErrors: boolean;