diff --git a/airbyte-connector-builder-server/run_format.sh b/airbyte-connector-builder-server/run_format.sh
index 75f996ad67f0..e48ac5a5518e 100755
--- a/airbyte-connector-builder-server/run_format.sh
+++ b/airbyte-connector-builder-server/run_format.sh
@@ -1,5 +1,8 @@
 cd $1
 
+# Fail script on failing command
+set -e
+
 # Pasted from https://github.com/airbytehq/airbyte/blob/master/buildSrc/src/main/groovy/airbyte-python.gradle#L85-L96
 pip install 'mccabe==0.6.1'
 pip install 'flake8==4.0.1'
diff --git a/airbyte-connector-builder-server/run_tests.sh b/airbyte-connector-builder-server/run_tests.sh
index 44143fb895c8..921b3b271f41 100755
--- a/airbyte-connector-builder-server/run_tests.sh
+++ b/airbyte-connector-builder-server/run_tests.sh
@@ -1,5 +1,8 @@
 cd $1
 
+# Fail script on failing command
+set -e
+
 # Install dependencies
 pip install -e .
 pip install -e '.[main]'
diff --git a/airbyte-connector-builder-server/unit_tests/connector_builder/impl/test_low_code_cdk_adapter.py b/airbyte-connector-builder-server/unit_tests/connector_builder/impl/test_low_code_cdk_adapter.py
index f37d882c5fa1..b097f5e9a293 100644
--- a/airbyte-connector-builder-server/unit_tests/connector_builder/impl/test_low_code_cdk_adapter.py
+++ b/airbyte-connector-builder-server/unit_tests/connector_builder/impl/test_low_code_cdk_adapter.py
@@ -10,7 +10,7 @@
 import requests
 from airbyte_cdk.models import AirbyteLogMessage, AirbyteMessage, AirbyteRecordMessage, Level, Type
 from airbyte_cdk.sources.declarative.declarative_stream import DeclarativeStream
-from airbyte_cdk.sources.declarative.parsers.undefined_reference_exception import UndefinedReferenceException
+from airbyte_cdk.sources.declarative.parsers.custom_exceptions import UndefinedReferenceException
 from airbyte_cdk.sources.streams.http import HttpStream
 
 from connector_builder.impl.low_code_cdk_adapter import LowCodeSourceAdapter