Merge pull request #5901 from mempool/nymkappa/tape-fix-hashrate-indexing

[mining] fix potential bug where we try to index hashrate even if there are no blocks

backend/src/api/mining/mining.ts

@@ -256,6 +256,10 @@ class Mining {
 
         const blockStats: any = await BlocksRepository.$blockCountBetweenTimestamp(
           null, fromTimestamp / 1000, toTimestamp / 1000);
+
+        if (blockStats.blockCount <= 0) {
+          logger.debug(`No block found between ${fromTimestamp / 1000} and ${toTimestamp / 1000}, skipping hashrate indexing for this period`, logger.tags.mining);
+        } else {
           const lastBlockHashrate = await bitcoinClient.getNetworkHashPs(blockStats.blockCount,
             blockStats.lastBlockHeight);
 
@@ -282,6 +286,7 @@ class Mining {
             await HashratesRepository.$saveHashrates(hashrates);
             hashrates.length = 0;
           }
+        }
 
         const elapsedSeconds = Math.max(1, Math.round((new Date().getTime() / 1000) - timer));
         if (elapsedSeconds > 1) {