From 1474e204a8580d10d4ff22155bbd385e4363383d Mon Sep 17 00:00:00 2001
From: ErikEk <erik.ek@gmail.com>
Date: Fri, 17 Jun 2022 14:45:53 +0200
Subject: [PATCH] add-error-msg-if-missing-key

---
 headerfs/index.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/headerfs/index.go b/headerfs/index.go
index 812e4be4..6fd3157f 100644
--- a/headerfs/index.go
+++ b/headerfs/index.go
@@ -266,6 +266,12 @@ func (h *headerIndex) chainTipWithTx(tx walletdb.ReadTx) (*chainhash.Hash,
 	// fetch the hash for this tip, then using that we'll fetch the height
 	// that corresponds to that hash.
 	tipHashBytes := rootBucket.Get(tipKey)
+	if tipHashBytes == nil {
+		return nil, 0, fmt.Errorf(
+			"the key %s does not exist in bucket %s",
+			tipKey, indexBucket,
+		)
+	}
 	tipHeight, err := getHeaderEntry(rootBucket, tipHashBytes)
 	if err != nil {
 		return nil, 0, ErrHeightNotFound