Error while executing lnd: "unable to create partial chain control: status code: 401"

[patrikroy]

Background

I'm facing the almost same issue than described in this post: trying to run lnd along my Bitcoin Core full node, getting the error as pasted in topic, and not being able to find a solution.

Environment

• lnd version 0.18.3-beta
• OS version: Linux 6.8.0-48-generic #48-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 27 14:04:52 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux / Ubuntu 24.04.1 LTS (GNU/Linux 6.8.0-48-generic x86_64)
• bitcoind version: Bitcoin Core v28.0.0

Steps to reproduce

When bitcoind full sync is complete, in a first terminal, lnd is executed.
In a second one, lncli unlock. it returns lnd successfully unlocked!.
First terminal then returns this, check the 4 last lines:

[INF] LTND: Version: 0.18.3-beta commit=v0.18.3-beta, build=production, logging=default, debuglevel=debug
[INF] LTND: Active chain: Bitcoin (network=mainnet)
[DBG] NTFR: ChainNotifier RPC server successfully register with root gRPC server
[DBG] NTFR: ChainKit RPC server successfully register with root gRPC server
[DBG] SGNR: Signer RPC server successfully register with root gRPC server
[DBG] RRPC: Router RPC server successfully register with root gRPC server
[DBG] PRPC: Peers RPC server successfully register with root gRPC server
[DBG] ARPC: Autopilot RPC server successfully register with root gRPC server
[DBG] NRPC: Neutrino RPC server successfully register with root gRPC server
[DBG] VRPC: Versioner RPC server successfully registered with root gRPC server
[DBG] WLKT: WalletKit RPC server successfully registered with root gRPC server
[DBG] IRPC: Invoices RPC server successfully registered with root gRPC server
[INF] RPCS: RPC server listening on 127.0.0.1:10009
[DBG] NTFR: ChainNotifier REST server successfully registered with root REST server
[DBG] NTFR: ChainKit REST server successfully registered with root REST server
[DBG] SGNR: Signer REST server successfully registered with root REST server
[DBG] RRPC: Router REST server successfully registered with root REST server
[DBG] PRPC: Peers REST server successfully registered with root REST server
[DBG] ARPC: Autopilot REST server successfully registered with root REST server
[DBG] NRPC: Neutrino REST server successfully registered with root REST server
[DBG] VRPC: Versioner REST server successfully registered with root REST server
[DBG] WLKT: WalletKit REST server successfully registered with root REST server
[DBG] IRPC: Invoices REST server successfully registered with root REST server
[INF] RPCS: gRPC proxy started at 127.0.0.1:8080
[INF] LTND: Opening the main database, this might take a few minutes...
[INF] LTND: Opening bbolt database, sync_freelist=false, auto_compact=false
[INF] LTND: Creating local graph and channel state DB instances
[DBG] CHDB: Populating in-memory channel graph, this might take a while...
[DBG] CHDB: Finished populating in-memory channel graph (took 28.543µs, num_node_features=0, num_nodes=0, num_channels=0)
[INF] CHDB: Checking for schema update: latest_version=31, db_version=31
[INF] CHDB: Checking for optional update: prune_revocation_log=false, db_version=empty
[INF] LTND: Database(s) now open (time_to_open=11.430076ms)!
[INF] LTND: We're not running within systemd or the service type is not 'notify'
[INF] LTND: Waiting for wallet encryption password. Use `lncli create` to create a wallet, `lncli unlock` to unlock an existing wallet, or `lncli changepassword` to change the password of an existing wallet and unlock it.
[DBG] RPCS: [/lnrpc.WalletUnlocker/UnlockWallet] requested
[INF] LNWL: Opened wallet
[ERR] LTND: unable to create partial chain control: status code: 401, response: ""
[ERR] LTND: Shutting down because error in main method: error creating wallet config: unable to create partial chain control: status code: 401, response: ""
[INF] LTND: Shutdown complete

Here are the settings used:
~/.bitcoin/bitcoin.conf

daemon=1
datadir=/btcfullnode
zmqpubrawblock=tcp://127.0.0.1:28332
zmqpubrawtx=tcp://127.0.0.1:28333
rpcpassword="mypassword"
rpcserialversion=1
rpcuser=myrpcuser
server=1

~/.lnd/lnd.conf

[Application Options]
debuglevel=debug

[Bitcoin]
bitcoin.node=bitcoind
bitcoin.mainnet=true

[Bitcoind]
bitcoind.rpcuser=myrpcuser
bitcoind.rpcpass="mypassword"
bitcoind.zmqpubrawblock=tcp://127.0.0.1:28332
bitcoind.zmqpubrawtx=tcp://127.0.0.1:28333

ufw

Status: active

To                         Action      From
--                         ------      ----
OpenSSH                    ALLOW       Anywhere
Apache Full                ALLOW       Anywhere
8332/tcp                   ALLOW       Anywhere                   # bitcoind JSON-RPC
8333/tcp                   ALLOW       Anywhere                   # bitcoind P2P
9735/tcp                   ALLOW       Anywhere                   # lnd P2P
8080/tcp                   ALLOW       Anywhere                   # lnd REST API access
10009/tcp                  ALLOW       Anywhere                   # lnd RPC
28332/tcp                  ALLOW       Anywhere                   # bitcoind raw block data
28333/tcp                  ALLOW       Anywhere                   # bitcoind raw transaction data
OpenSSH (v6)               ALLOW       Anywhere (v6)
Apache Full (v6)           ALLOW       Anywhere (v6)
8332/tcp (v6)              ALLOW       Anywhere (v6)              # bitcoind JSON-RPC
8333/tcp (v6)              ALLOW       Anywhere (v6)              # bitcoind P2P
9735/tcp (v6)              ALLOW       Anywhere (v6)              # lnd P2P
8080/tcp (v6)              ALLOW       Anywhere (v6)              # lnd REST API access
10009/tcp (v6)             ALLOW       Anywhere (v6)              # lnd RPC
28332/tcp (v6)             ALLOW       Anywhere (v6)              # bitcoind raw block data
28333/tcp (v6)             ALLOW       Anywhere (v6)              # bitcoind raw transaction data

Expected behaviour

After opening my wallet, I'm expecting lnd to connect as it should

Actual behaviour

lnd is shutting down

Any ideas are welcome, thanks!

[guggero]

401 means "unauthorized" when connecting to bitcoind. I think it's the double quotes of the password ("mypassword" assuming that's your real password). Make sure you don't use any special characters that could have a different meaning in the context of a configuration file (e.g. characters like spaces, equal sign, comment # character or quote characters are bound to give you trouble).

[patrikroy]

Thank you, changing the password and removing double quotes and some special characters did the trick.

For the record, I also had to start bitcoind with the -deprecatedrpc=warnings additional parameter as suggested in this post for lnd to work, related to the RPC breakage with v28.0 #31039 issue.