ERROR: chunk size exceeds buffer size while exporting monero database

[PunchEnergyFTW]

Hi!

I wanted to create a backup of my monero database and found the tool monero-blockchain-export.exe. Yesterday, i let the tool run for a few minutes and it all worked very well.

But when i want to restart the backup, i get a "chunk size exceeds buffer size" error. I have synced the database in between these two export attempts, could this be the problem? If yes, isn't this tool supposed to make incremental backups easier?

My blockchain.raw export file is currently ~9GB and at about block height ~1.300.000

C:\Users\xxx\Documents\monero-gui-win-x64-v0.18.3.3\monero-gui-v0.18.3.3\extras>monero-blockchain-export.exe --d
ata-dir U:\MoneroBlockChain --output-file U:\Monero-Blockchain-Export\blockchain.raw
2024-06-03 23:52:08.648 W Starting...
2024-06-03 23:52:08.649 W Export output file: U:\Monero-Blockchain-Export\blockchain.raw
2024-06-03 23:52:08.649 W Initializing source blockchain (BlockchainDB)
2024-06-03 23:52:08.650 W database: LMDB
2024-06-03 23:52:08.651 W Loading blockchain from folder U:\MoneroBlockChain\lmdb ...
2024-06-03 23:52:08.748 W Source blockchain storage initialized OK
2024-06-03 23:52:08.749 W Exporting blockchain raw data...
2024-06-03 23:52:08.750 I Storing blocks raw data...
2024-06-03 23:52:08.750 I source blockchain height: 3106278
2024-06-03 23:52:08.750 I Using block height of source blockchain: 3106278
2024-06-03 23:52:08.758 I bootstrap file recognized
2024-06-03 23:52:08.758 I bootstrap::file_info size: 4
2024-06-03 23:52:08.759 I bootstrap file v1.0
2024-06-03 23:52:08.759 I bootstrap magic size: 4
2024-06-03 23:52:08.759 I bootstrap header size: 1024
2024-06-03 23:52:08.760 I bootstrap::blocks_info size: 6
2024-06-03 23:52:08.760 I bootstrap first block:0
2024-06-03 23:52:08.760 I bootstrap last block:2888442
2024-06-03 23:52:08.761 I Scanning blockchain from bootstrap file...
2024-06-03 23:53:16.722 W WARNING: chunk_size 596646401 > BUFFER_SIZE 2097152  height: 8, offset 453105
2024-06-03 23:53:16.723 E Exception at [Export error], what=Aborting: chunk size exceeds buffer size