Version: litecoin-0.21.4 ERROR: AcceptBlockHeader: prev block not found

[goodthebest]

@losh11 @DavidBurkett

Version: litecoin-0.21.4

I'm running an LTC mining pool. After enabling the prune option, I stopped finding any blocks.

I reverted to a full node, but the issue persists. Upon checking the node's logs, I noticed some strange, recurring entries.

ERROR: AcceptBlockHeader: prev block not found

LTC node log

---

``
2025-02-13T09:39:33Z CreateNewBlock(): block weight: 867457 txs: 772 fees: 4855087 sigops: 3739 MWEB weight: 61
2025-02-13T09:39:44Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:39:53Z CreateNewBlock(): block weight: 903355 txs: 813 fees: 4986040 sigops: 3868 MWEB weight: 61
2025-02-13T09:39:59Z CreateNewBlock(): block weight: 910854 txs: 823 fees: 5055983 sigops: 3886 MWEB weight: 61
2025-02-13T09:40:20Z CreateNewBlock(): block weight: 947602 txs: 866 fees: 5286831 sigops: 4045 MWEB weight: 61
2025-02-13T09:40:30Z CreateNewBlock(): block weight: 957685 txs: 880 fees: 5306402 sigops: 4081 MWEB weight: 61
2025-02-13T09:40:38Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:40:40Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:40:41Z CreateNewBlock(): block weight: 986022 txs: 903 fees: 5354617 sigops: 4178 MWEB weight: 61
2025-02-13T09:40:47Z CreateNewBlock(): block weight: 998255 txs: 916 fees: 5374209 sigops: 4213 MWEB weight: 61
2025-02-13T09:40:51Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:41:01Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:41:03Z CreateNewBlock(): block weight: 1011844 txs: 935 fees: 5595542 sigops: 4272 MWEB weight: 61
2025-02-13T09:41:24Z CreateNewBlock(): block weight: 1045427 txs: 977 fees: 5709665 sigops: 4405 MWEB weight: 61
2025-02-13T09:41:34Z [loop] keypool reserve 11
2025-02-13T09:41:34Z [loop] keypool keep 11
2025-02-13T09:41:35Z CreateNewBlock(): block weight: 1059696 txs: 997 fees: 5734086 sigops: 4456 MWEB weight: 61
2025-02-13T09:41:35Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:41:37Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:41:45Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:41:45Z CreateNewBlock(): block weight: 1168828 txs: 1017 fees: 5875724 sigops: 4499 MWEB weight: 61
2025-02-13T09:42:07Z CreateNewBlock(): block weight: 1196793 txs: 1045 fees: 5978535 sigops: 4624 MWEB weight: 61
2025-02-13T09:42:28Z CreateNewBlock(): block weight: 1271634 txs: 1085 fees: 6170174 sigops: 4965 MWEB weight: 61
2025-02-13T09:42:32Z ERROR: AcceptBlockHeader: prev block not found
2025-02-13T09:42:35Z CreateNewBlock(): block weight: 1277747 txs: 1094 fees: 6193488 sigops: 4992 MWEB weight: 61```

~/litecoin-0.21.4/bin$ ./litecoin-cli getblockchaininfo
{
  "chain": "main",
  "blocks": 2844716,
  "headers": 2844716,
  "bestblockhash": "1e6d3ecb7bd3a78c3eda73d9c8aa21e6463adbbf131a0b6fa507495b3ed28dde",
  "difficulty": 76338008.85487297,
  "mediantime": 1739439964,
  "verificationprogress": 0.9999997498188675,
  "initialblockdownload": false,
  "chainwork": "000000000000000000000000000000000000000000001819c944c6391461d668",
  "size_on_disk": 207807198295,
  "pruned": false,
  "softforks": {
    "bip34": {
      "type": "buried",
      "active": true,
      "height": 710000
    },
    "bip66": {
      "type": "buried",
      "active": true,
      "height": 811879
    },
    "bip65": {
      "type": "buried",
      "active": true,
      "height": 918684
    },
    "csv": {
      "type": "buried",
      "active": true,
      "height": 1201536
    },
    "segwit": {
      "type": "buried",
      "active": true,
      "height": 1201536
    },
    "taproot": {
      "type": "bip8",
      "bip8": {
        "status": "active",
        "start_height": 2161152,
        "timeout_height": 2370816,
        "since": 2257920
      },
      "height": 2257920,
      "active": true
    },
    "mweb": {
      "type": "bip8",
      "bip8": {
        "status": "active",
        "start_height": 2217600,
        "timeout_height": 2427264,
        "since": 2265984
      },
      "height": 2265984,
      "active": true
    }
  },
  "warnings": ""

[goodthebest]

I couldn't figure this out, tested on different servers, same issue arises even solid ssd disks being used.

I'm still waiting for the response.