Bugfix/fix exception in portfolio calculator (#4109)

* Fix exception in portfolio calculator

* Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Fixed
+
+- Fixed an exception in the caching of the portfolio snapshot in the portfolio calculator
+
 ## 2.126.0 - 2024-12-07
 
 ### Added

apps/api/src/app/portfolio/calculator/portfolio-calculator.ts

@@ -176,6 +176,7 @@ export abstract class PortfolioCalculator {
     if (!transactionPoints.length) {
       return {
         currentValueInBaseCurrency: new Big(0),
+        errors: [],
         hasErrors: false,
         historicalData: [],
         positions: [],