Corrupted transactions indexes and chain state corruptions when trying to set up Start9 Server Pure with Btc Knots

StartOS Support
1

Hello community, anyone knows how to fix this? (error message when trying to set up Sart9 Server Pure, running with Bitcoin Knots):

025-11-21T17:30:24+01:00 2025-11-21T16:30:24Z Fatal LevelDB error: Corruption: block checksum mismatch: /root/.bitcoin/indexes/txindex/000300.ldb
2025-11-21T17:30:24+01:00 2025-11-21T16:30:24Z You can use -debug=leveldb to get more complete diagnostic messages
2025-11-21T17:30:24+01:00 2025-11-21T16:30:24Z
2025-11-21T17:30:24+01:00
2025-11-21T17:30:24+01:00 ************************
2025-11-21T17:30:24+01:00 EXCEPTION: 15dbwrapper_error
2025-11-21T17:30:24+01:00 Fatal LevelDB error: Corruption: block checksum mismatch: /root/.bitcoin/indexes/txindex/000300.ldb
2025-11-21T17:30:24+01:00 bitcoin in scheduler
2025-11-21T17:30:24+01:00
2025-11-21T17:30:24+01:00
2025-11-21T17:30:24+01:00
2025-11-21T17:30:24+01:00 ************************
2025-11-21T17:30:24+01:00 EXCEPTION: 15dbwrapper_error
2025-11-21T17:30:24+01:00 Fatal LevelDB error: Corruption: block checksum mismatch: /root/.bitcoin/indexes/txindex/000300.ldb
2025-11-21T17:30:24+01:00 bitcoin in scheduler
2025-11-21T17:30:24+01:00
2025-11-21T17:30:24+01:00 terminate called after throwing an instance of ‘dbwrapper_error’
2025-11-21T17:30:24+01:00 what(): Fatal LevelDB error: Corruption: block checksum mismatch: /root/.bitcoin/indexes/txindex/000300.ldb
2025-11-21T17:30:24+01:00 PROCESS TERMINATED BY SIGABRT

2025-11-21T17:30:39+01:00 Error updating blockchain info: error: timeout on transient error: Could not connect to the server 127.0.0.1:8332
2025-11-21T17:30:39+01:00
2025-11-21T17:30:39+01:00 Make sure the bitcoind server is running and that you are connecting to the correct RPC port.
2025-11-21T17:30:39+01:00 Use “bitcoin-cli -help” for more info.
2025-11-21T17:30:39+01:00
2025-11-21T17:30:39+01:00 Error updating network info: error: timeout on transient error: Could not connect to the server 127.0.0.1:8332
2025-11-21T17:30:39+01:00
2025-11-21T17:30:39+01:00 Make sure the bitcoind server is running and that you are connecting to the correct RPC port.
2025-11-21T17:30:39+01:00 Use “bitcoin-cli -help” for more info.

2

You’ll probably need to register for support at Start9.me using your support access code you were sent by email, so we can go through a few possible causes.

3

Hi Stuart, thank you so much for this reply. Luckily I got it sorted, the issue was caused by the Firewall. The blockchain synchronised successfully after plugging the server directly to the ISP router :sparkles:.