Invalid beacon block ... processBlock: failed to process block body operations

[lystopad]

Erigon 3.3.1 running as a chiado shutter validator on Ubuntu 24.04 last 3 days complains:

[DBUG] [12-15|06:16:37.307] Processed new epoch successfully         epoch=1251964 process_epoch_elpsed=917.199µs
[DBUG] [12-15|06:16:37.308] Processed new epoch successfully         epoch=1252584 process_epoch_elpsed=960.011µs
[WARN] [12-15|06:16:37.308] Invalid beacon block                     slot=20031440 blockRoot=33b0ef976913af9867613fa9934389b54b09d337f2f4132d19cd96c0af058d46 reason="processBlock: failed to process block body operations: ProcessAttestation: processAttestationPostAltair: committee index out of bounds"
[WARN] [12-15|06:16:37.308] [Caplin] Failed to process block batch   app=caplin stage=ForwardSync err="bad blocks segment received: processBlock: failed to process block body operations: ProcessAttestation: processAttestationPostAltair: committee index out of bounds"
[DBUG] [12-15|06:16:37.312] Processed new epoch successfully         epoch=1252585 process_epoch_elpsed=942.548µs

lighthouse v8.0.1 log:

Dec 15 06:18:00.044 ERROR Failed to download attester duties            current_epoch: 1254789, request_epoch: 1254790, err: FailedToDownloadAttesters("Some endpoints failed, num_failed: 2 http://10.63.0.1:5555/ => RequestFailed(ServerMessage(ErrorMessage { code: 400, message: \"attestation duties: epoch 1254790 is too far in the future\", stacktraces: [] })), http://10.63.0.1:5555/ => RequestFailed(ServerMessage(ErrorMessage { code: 400, message: \"attestation duties: epoch 1254790 is too far in the future\", stacktraces: [] }))")
Dec 15 06:18:00.044 WARN  Failed to download sync committee duties      sync_committee_period: 2451, error: Some endpoints failed, num_failed: 2 http://10.63.0.1:5555/ => RequestFailed(ServerMessage(ErrorMessage { code: 404, message: "could not find sync committee for epoch 1254912", stacktraces: [] })), http://10.63.0.1:5555/ => RequestFailed(ServerMessage(ErrorMessage { code: 404, message: "could not find sync committee for epoch 1254912", stacktraces: [] }))

@taratorio FYI