diff --git a/Build-tf b/Build-tf
index 23082068..3d9aec00 100644
--- a/Build-tf
+++ b/Build-tf
@@ -1,4 +1,9 @@
 #!/bin/bash
+set -e
+
+export LANG=en_US.UTF-8
+export LC_ALL=en_US.UTF-8
+
 BUILD_NAME="1.0.0"
 BUILD_NUMBER="1"
 EXPORT_OPTIONS_PLIST="Support/ExportOptions.plist"
@@ -7,10 +12,12 @@ flutter clean
 flutter pub get
 dart run build_runner build --delete-conflicting-outputs
 
-cd ios
+cd ios || { echo "Failed to enter ios directory"; exit 1; }
+
 rm -rf Pods Podfile.lock
 pod install --repo-update
 pod update || { echo "Pod update failed"; exit 1; }
+
 echo "Building iOS IPA"
 
 flutter build ipa \