From df810d10af8e0b44fcb39887e826dacd35f7ef70 Mon Sep 17 00:00:00 2001
From: Andrew Westberg <andrewwestberg@gmail.com>
Date: Thu, 5 Sep 2024 19:00:02 +0000
Subject: [PATCH] Improve error message for missing utxo in newm-chain

---
 .../main/kotlin/io/newm/chain/grpc/NewmChainService.kt    | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/newm-chain/src/main/kotlin/io/newm/chain/grpc/NewmChainService.kt b/newm-chain/src/main/kotlin/io/newm/chain/grpc/NewmChainService.kt
index 86c86103..d76d3839 100644
--- a/newm-chain/src/main/kotlin/io/newm/chain/grpc/NewmChainService.kt
+++ b/newm-chain/src/main/kotlin/io/newm/chain/grpc/NewmChainService.kt
@@ -398,9 +398,11 @@ class NewmChainService : NewmChainGrpcKt.NewmChainCoroutineImplBase() {
                     } else {
                         utxos.sumOf { utxo ->
                             val scriptRefHexLength =
-                                ledgerRepository
-                                    .queryUtxosByOutputRef(utxo.hash, utxo.ix.toInt())
-                                    .first()
+                                requireNotNull(
+                                    ledgerRepository
+                                        .queryUtxosByOutputRef(utxo.hash, utxo.ix.toInt())
+                                        .firstOrNull()
+                                ) { "Utxo not found in ledger: ${utxo.hash}#${utxo.ix}" }
                                     .scriptRef
                                     ?.length
                                     ?.toLong()