From 517612095ba94f55795ab1a025c44ea510d9a408 Mon Sep 17 00:00:00 2001
From: malik1004x <malikowskirobert@gmail.com>
Date: Thu, 20 Aug 2026 23:14:12 +0200
Subject: [PATCH] safeguard calls to coin integration classes (#3534)

---
 lib/entities/default_settings_migration.dart | 26 ++++++++++++++------
 lib/store/settings_store.dart                | 14 +++++++----
 2 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/lib/entities/default_settings_migration.dart b/lib/entities/default_settings_migration.dart
index ae94b47e1..4696fab40 100644
--- a/lib/entities/default_settings_migration.dart
+++ b/lib/entities/default_settings_migration.dart
@@ -95,8 +95,12 @@ Future<void> defaultSettingsMigration(
         case 1:
           await sharedPreferences.setString(
               PreferencesKey.currentFiatCurrencyKey, FiatCurrency.usd.toString());
-          await sharedPreferences.setInt(PreferencesKey.currentTransactionPriorityKeyLegacy,
-              monero!.getDefaultTransactionPriority().raw);
+
+          if (monero != null) {
+            await sharedPreferences.setInt(
+                PreferencesKey.currentTransactionPriorityKeyLegacy,
+                monero!.getDefaultTransactionPriority().raw);
+          }
           await sharedPreferences.setInt(
               PreferencesKey.currentBalanceDisplayModeKey, BalanceDisplayMode.availableBalance.raw);
           await sharedPreferences.setBool('save_recipient_address', true);
@@ -791,6 +795,10 @@ Future<void> _backupWowneroSeeds(Box<HavenSeedStore> havenSeedStore) async {
 }
 
 Future<void> _updateMoneroPriority(SharedPreferences sharedPreferences) async {
+  if (monero == null) {
+    return;
+  }
+
   final currentPriority =
       await sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority) ??
           monero!.getDefaultTransactionPriority().serialize();
@@ -1071,11 +1079,15 @@ Future<void> generateBackupPassword(SecureStorage secureStorage) async {
 
 Future<void> changeTransactionPriorityAndFeeRateKeys(SharedPreferences sharedPreferences) async {
   final legacyTransactionPriority =
-      sharedPreferences.getInt(PreferencesKey.currentTransactionPriorityKeyLegacy)!;
-  await sharedPreferences.setInt(
-      PreferencesKey.moneroTransactionPriority, legacyTransactionPriority);
-  await sharedPreferences.setInt(PreferencesKey.bitcoinTransactionPriority,
-      bitcoin!.getMediumTransactionPriority().serialize());
+      sharedPreferences.getInt(PreferencesKey.currentTransactionPriorityKeyLegacy);
+  if (legacyTransactionPriority != null) {
+    await sharedPreferences.setInt(
+        PreferencesKey.moneroTransactionPriority, legacyTransactionPriority);
+  }
+  if (bitcoin != null) {
+    await sharedPreferences.setInt(PreferencesKey.bitcoinTransactionPriority,
+        bitcoin!.getMediumTransactionPriority().serialize());
+  }
 }
 
 Future<void> fixBtcDerivationPaths() async {
diff --git a/lib/store/settings_store.dart b/lib/store/settings_store.dart
index 95ab5d52c..f699640e7 100644
--- a/lib/store/settings_store.dart
+++ b/lib/store/settings_store.dart
@@ -1777,12 +1777,16 @@ abstract class SettingsStoreBase with Store {
   Future<void> reload() async {
     final sharedPreferences = await getIt.getAsync<SharedPreferences>();
 
-    fiatCurrency = FiatCurrency.deserialize(
-        raw: sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey)!);
+    final savedFiatCurrency = sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey);
+    if (savedFiatCurrency != null) {
+      fiatCurrency = FiatCurrency.deserialize(raw: savedFiatCurrency);
+    }
 
-    priority[WalletType.monero] = monero?.deserializeMoneroTransactionPriority(
-            raw: sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!) ??
-        priority[WalletType.monero]!;
+    if (monero != null &&
+        sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority) != null) {
+      priority[WalletType.monero] = monero!.deserializeMoneroTransactionPriority(
+          raw: sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!);
+    }
 
     if (wownero != null &&
         sharedPreferences.getInt(PreferencesKey.wowneroTransactionPriority) != null) {