Merge pull request #8822 from michael1011/fix-config-error-handling

cfg: fail startup on flags.Error parsing error

config.go

@@ -38,6 +38,7 @@ import (
 	"github.com/lightningnetwork/lnd/lnrpc/peersrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/routerrpc"
 	"github.com/lightningnetwork/lnd/lnrpc/signrpc"
+	"github.com/lightningnetwork/lnd/lnutils"
 	"github.com/lightningnetwork/lnd/lnwallet"
 	"github.com/lightningnetwork/lnd/lnwire"
 	"github.com/lightningnetwork/lnd/routing"
@@ -771,7 +772,9 @@ func LoadConfig(interceptor signal.Interceptor) (*Config, error) {
 		// If it's a parsing related error, then we'll return
 		// immediately, otherwise we can proceed as possibly the config
 		// file doesn't exist which is OK.
-		if _, ok := err.(*flags.IniError); ok {
+		if lnutils.ErrorAs[*flags.IniError](err) ||
+			lnutils.ErrorAs[*flags.Error](err) {
+
 			return nil, err
 		}
 

docs/release-notes/release-notes-0.18.1.md

@@ -22,10 +22,13 @@
 * `closedchannels` now [successfully reports](https://github.com/lightningnetwork/lnd/pull/8800)
   settled balances even if the delivery address is set to an address that
   LND does not control.
- 
+
 * [SendPaymentV2](https://github.com/lightningnetwork/lnd/pull/8734) now cancels
   the background payment loop if the user cancels the stream context.
 
+* [Fixed a bug](https://github.com/lightningnetwork/lnd/pull/8822) that caused
+  LND to read the config only partially and continued with the startup.
+
 # New Features
 ## Functional Enhancements
 ## RPC Additions