[bug]: Neutrino doesn't start with LND 19.2

[psic4t]

Background

I use LND in a Docker container. Neutrino does not start anymore:

lnd       | 2025-08-21 08:32:40.263 [INF] LTND: Database(s) now open (time_to_open=2m21.41010137s)!
lnd       | 2025-08-21 08:32:45.038 [ERR] LTND: unable to initialize neutrino backend: unable to create neutrino light client: EOF
lnd       | 2025-08-21 08:32:45.039 [ERR] LTND: Shutting down due to error in main method rev=a83945 err="unable to initialize neutrino backend: unable to create neutrino light client: EOF"
lnd       | 2025-08-21 08:32:45.137 [INF] LTND: Shutdown complete

debuglevel = trace but no more info. Am I missing something?

Your environment

• version of lnd
  19.2

• which operating system (uname -a on *Nix)
  Linux triton 5.15.103-0-virt Fix name typo in README #1-Alpine SMP Fri, 17 Mar 2023 09:34:13 +0000 x86_64 Linux

• version of btcd, bitcoind, or other backend
  Neutrino 19.2

• any other relevant environment details
  Docker

[djkazic]

If it's possible, try deleting the neutrino.db file and starting LND up again.

[psic4t]

I deleted neutrino.db and started LND again. It took more than 5 minutes (see below) then LNTD says "Shutdown complete" and the container give these errors:

lnd       | 2025-08-22 16:07:17.918 [INF] LTND: Database(s) now open (time_to_open=5m13.384486074s)!
lnd       | 2025-08-22 16:07:17.960 [INF] LTND: Shutdown complete
lnd       | panic: runtime error: slice bounds out of range [:2] with capacity 0
lnd       |
lnd       | goroutine 1 [running]:
lnd       | github.com/lightninglabs/neutrino/headerfs.getHeaderEntry({0x7f727cc3c5d0?, 0xc0014ceac0?}, {0x0?, 0xc0008f0708?, 0xc0007a01e0?})
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/headerfs/index.go:351 +0x185
lnd       | github.com/lightninglabs/neutrino/headerfs.(*headerIndex).chainTipWithTx(0xc0014cc7b0, {0x2d6a680?, 0xc0007a01e0?})
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/headerfs/index.go:269 +0xe5
lnd       | github.com/lightninglabs/neutrino/headerfs.(*headerIndex).chainTip.func1({0x2d6a680?, 0xc0007a01e0?})
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/headerfs/index.go:234 +0x3c
lnd       | github.com/btcsuite/btcwallet/walletdb/bdb.(*db).View(0xc0007a6b48, 0xc00078c100, 0xc0014e0108?)
lnd       |     github.com/btcsuite/btcwallet/walletdb@v1.5.1/bdb/db.go:392 +0x8f
lnd       | github.com/btcsuite/btcwallet/walletdb.View(...)
lnd       |     github.com/btcsuite/btcwallet/walletdb@v1.5.1/interface.go:260
lnd       | github.com/lightninglabs/neutrino/headerfs.(*headerIndex).chainTip(0xc0014cc7b0)
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/headerfs/index.go:232 +0xc7
lnd       | github.com/lightninglabs/neutrino/headerfs.NewBlockHeaderStore({0xc000720060?, 0x7?}, {0x2d818e0?, 0xc0007a6b48?}, 0xc0014e0ab0)
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/headerfs/store.go:197 +0x16d
lnd       | github.com/lightninglabs/neutrino.NewChainService({{0xc000720060, 0x25}, {0x2d818e0, 0xc0007a6b48}, {{0x28d9a79, 0x7},
0xd9b4bef9, {0x28d5d55, 0x4}, {0x467cd00, ...}, ...}, ...})
lnd       |     github.com/lightninglabs/neutrino@v0.16.1/neutrino.go:788 +0xa8e
lnd       | github.com/lightningnetwork/lnd.initNeutrinoBackend({0x2d713f8, 0xc00067db30}, 0xc0000d8108, {0xc00065ccc0?, 0x1d?}, 0xc000b38260)
lnd       |     github.com/lightningnetwork/lnd/config_builder.go:1630 +0xa58
lnd       | github.com/lightningnetwork/lnd.(*DefaultWalletImpl).BuildWalletConfig(0xc000052fa0, {0x2d713f8, 0xc00067db30}, 0xc001255320, 0xc0004342e0, 0xc0000bc9a0, {0xc00007b310, 0x1, 0x0?})
lnd       |     github.com/lightningnetwork/lnd/config_builder.go:330 +0x2c5
lnd       | github.com/lightningnetwork/lnd.Main(0xc0000d8108, {{0x0?, 0xc0004a1ee8?, 0x40f6b0?}}, 0xc000434280, {0xc00044f420, 0xc00018ea80, 0xc00018eaf0, 0xc00018eb60, {0x0}})
lnd       |     github.com/lightningnetwork/lnd/lnd.go:486 +0x1dcc
lnd       | main.main()
lnd       |     github.com/lightningnetwork/lnd/cmd/lnd/main.go:38 +0x205
lnd exited with code 2

[ziggie1984]

you need to delete not just the neutrino.db but also the header files block_headers.bin and reg_filter_headers.bin

[psic4t]

This helped! My node is up again. Thanks a lot for your help!