diff --git a/rollup/internal/controller/relayer/l2_relayer.go b/rollup/internal/controller/relayer/l2_relayer.go
index 4df93edf5..0ce009210 100644
--- a/rollup/internal/controller/relayer/l2_relayer.go
+++ b/rollup/internal/controller/relayer/l2_relayer.go
@@ -206,7 +206,7 @@ func (r *Layer2Relayer) initializeGenesis() error {
 
 	diskRoot, err := rutils.GetDiskRoot(r.ctx, r.l2RpcClient, endChunk.EndBlockNumber)
 	if err != nil {
-		return fmt.Errorf("failed to get disk root, block number: %v", endChunk.EndBlockNumber)
+		return fmt.Errorf("failed to get disk root, block number: %v, err: %w", endChunk.EndBlockNumber, err)
 	}
 
 	if err = r.commitGenesisBatch(startFinalizedBatch.Hash, startFinalizedBatch.BatchHeader, diskRoot); err != nil {
diff --git a/rollup/internal/controller/watcher/l2_watcher.go b/rollup/internal/controller/watcher/l2_watcher.go
index 3400c177a..8b864c0d0 100644
--- a/rollup/internal/controller/watcher/l2_watcher.go
+++ b/rollup/internal/controller/watcher/l2_watcher.go
@@ -148,7 +148,7 @@ func (w *L2WatcherClient) getAndStoreBlocks(ctx context.Context, from, to uint64
 		header := block.Header()
 		header.Root, err = utils.GetDiskRoot(w.ctx, w.l2RpcClient, block.Number().Uint64())
 		if err != nil {
-			return fmt.Errorf("failed to get disk root, block number: %v", block.Number().Uint64())
+			return fmt.Errorf("failed to get disk root, block number: %v, err: %v", block.Number().Uint64(), err)
 		}
 
 		blocks = append(blocks, &encoding.Block{