diff --git a/backend/src/event-handlers/rollup.js b/backend/src/event-handlers/rollup.js
index 395e6a8..dc73620 100644
--- a/backend/src/event-handlers/rollup.js
+++ b/backend/src/event-handlers/rollup.js
@@ -31,9 +31,7 @@ const stakeRollupAvailability = async () => {
 const getBatchPostAuthorWeights = async (batchItems_) => {
   const weights = {};
   await Promise.each(batchItems_, async (postId) => {
-    // TODO: try/catch
     const post = await read(postId);
-    // TODO: try/catch
     const matrixPool = await matrixPools.get(postId);
     const { fee, result: { votePasses, quorumMet } } = matrixPool;
     post.authors.forEach(({ authorAddress, weightPPM }) => {
@@ -164,7 +162,13 @@ const start = async () => {
     if (!post.embeddedData?.matrixPools) return false;
 
     // Our task here is to check whether the posted result agrees with our own computations
-    const expectedAuthors = await getBatchPostAuthorWeights(post.embeddedData.matrixPools);
+    let expectedAuthors;
+    try {
+      expectedAuthors = await getBatchPostAuthorWeights(post.embeddedData.matrixPools);
+    } catch (e) {
+      console.error('Error calculating batch post author weights', e);
+      return false;
+    }
     return authorsMatch(post.authors, expectedAuthors);
   });