diff --git a/backend/src/services/learning-paths/database-learning-path-provider.ts b/backend/src/services/learning-paths/database-learning-path-provider.ts
index fa8f42c6..8cd6807b 100644
--- a/backend/src/services/learning-paths/database-learning-path-provider.ts
+++ b/backend/src/services/learning-paths/database-learning-path-provider.ts
@@ -29,7 +29,7 @@ async function getLearningObjectsForNodes(nodes: LearningPathNode[]): Promise<Ma
             )
         )
     );
-    if (nullableNodesToLearningObjects.values().some((it) => it === null)) {
+    if (Array.from(nullableNodesToLearningObjects.values()).some((it) => it === null)) {
         throw new Error('At least one of the learning objects on this path could not be found.');
     }
     return nullableNodesToLearningObjects as Map<LearningPathNode, FilteredLearningObject>;
@@ -41,15 +41,11 @@ async function getLearningObjectsForNodes(nodes: LearningPathNode[]): Promise<Ma
 async function convertLearningPath(learningPath: LearningPathEntity, order: number, personalizedFor?: PersonalizationTarget): Promise<LearningPath> {
     const nodesToLearningObjects: Map<LearningPathNode, FilteredLearningObject> = await getLearningObjectsForNodes(learningPath.nodes);
 
-    const targetAges = nodesToLearningObjects
-        .values()
-        .flatMap((it) => it.targetAges || [])
-        .toArray();
+    const targetAges = Array.from(nodesToLearningObjects.values())
+        .flatMap((it) => it.targetAges || []);
 
-    const keywords = nodesToLearningObjects
-        .values()
-        .flatMap((it) => it.keywords || [])
-        .toArray();
+    const keywords = Array.from(nodesToLearningObjects.values())
+        .flatMap((it) => it.keywords || []);
 
     const image = learningPath.image ? learningPath.image.toString('base64') : undefined;
 
@@ -83,8 +79,7 @@ async function convertNodes(
     nodesToLearningObjects: Map<LearningPathNode, FilteredLearningObject>,
     personalizedFor?: PersonalizationTarget
 ): Promise<LearningObjectNode[]> {
-    const nodesPromise = nodesToLearningObjects
-        .entries()
+    const nodesPromise = Array.from(nodesToLearningObjects.entries())
         .map(async (entry) => {
             const [node, learningObject] = entry;
             const lastSubmission = personalizedFor ? await getLastSubmissionForCustomizationTarget(node, personalizedFor) : null;
@@ -102,8 +97,7 @@ async function convertNodes(
                     )
                     .map((trans, i) => convertTransition(trans, i, nodesToLearningObjects)), // Then convert all the transition
             };
-        })
-        .toArray();
+        });
     return await Promise.all(nodesPromise);
 }