From c9e175a0cc2d769d1c036531d5a198006731aef8 Mon Sep 17 00:00:00 2001
From: softsimon <softsimon@protonmail.com>
Date: Sun, 24 Jan 2021 23:56:51 +0700
Subject: [PATCH] Always fetch at least the coinbase transaction of blocks, and
 throw error if failed.

---
 backend/src/api/blocks.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/backend/src/api/blocks.ts b/backend/src/api/blocks.ts
index 3e4d3466e..7f9581ea9 100644
--- a/backend/src/api/blocks.ts
+++ b/backend/src/api/blocks.ts
@@ -70,13 +70,16 @@ class Blocks {
         if (mempool[txIds[i]]) {
           transactions.push(mempool[txIds[i]]);
           transactionsFound++;
-        } else if (config.MEMPOOL.BACKEND === 'esplora' || memPool.isInSync()) {
+        } else if (config.MEMPOOL.BACKEND === 'esplora' || memPool.isInSync() || i === 0) {
           logger.debug(`Fetching block tx ${i} of ${txIds.length}`);
           try {
             const tx = await transactionUtils.$getTransactionExtended(txIds[i]);
             transactions.push(tx);
           } catch (e) {
             logger.debug('Error fetching block tx: ' + e.message || e);
+            if (i === 0) {
+              throw new Error('Failed to fetch Coinbase transaction: ' + txIds[i]);
+            }
           }
         }
       }