diff --git a/.gitignore b/.gitignore
index 5ed8250d601e513bbaf9fcac5a0df816792c9d69..8f592aed3fa2ee4809a749866d976ed04f09c56e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@ docs/build
 docs/source/_static/openapi.json
 docs/vale/styles/*
 !docs/vale/styles/Vocab/
+venv/
 
 # Ignore files generated by apidoc
 docs/source/lso.rst
diff --git a/lso/playbook.py b/lso/playbook.py
index 2827abe188abe39930a79226b67149a723f7fe41..3e933d66f9b2530ee4d1deed42ca05ad437e0fd8 100644
--- a/lso/playbook.py
+++ b/lso/playbook.py
@@ -1,6 +1,6 @@
 """Module that gathers common API responses and data models."""
-import json
 import enum
+import json
 import logging
 import threading
 import uuid
@@ -71,7 +71,7 @@ def _run_playbook_proc(job_id: str, playbook_path: str, extra_vars: dict, invent
         playbook=playbook_path,
         inventory=inventory,
         extravars=extra_vars,
-        json_mode=True
+        json_mode=True,
     )
 
     # Process playbook JSON stdout
@@ -83,8 +83,8 @@ def _run_playbook_proc(job_id: str, playbook_path: str, extra_vars: dict, invent
         try:
             task_output = json.loads(line)
             parsed_output.append(task_output)
-        except json.JSONDecodeError as e:
-            pass # Skip empty line
+        except json.JSONDecodeError:
+            parsed_output.append({"invalid_json": line})
 
     payload = [
         {
@@ -92,9 +92,9 @@ def _run_playbook_proc(job_id: str, playbook_path: str, extra_vars: dict, invent
                 "status": ansible_playbook_run.status,
                 "job_id": job_id,
                 "output": json.dumps(parsed_output, indent=4),
-                "return_code": int(ansible_playbook_run.rc)
+                "return_code": int(ansible_playbook_run.rc),
             },
-            "confirm": "ACCEPTED"
+            "confirm": "ACCEPTED",
         }
     ]
 
diff --git a/test/routes/__init__.py b/test/routes/__init__.py
index 921a61f4715ac2c6cc9db918dd0d46b46450e529..b9b2d1be9ffc139ab201226b98fdd6891d635868 100644
--- a/test/routes/__init__.py
+++ b/test/routes/__init__.py
@@ -1,4 +1,4 @@
-from typing import TextIO
+from io import StringIO
 
 TEST_CALLBACK_URL = "https://fqdn.abc.xyz/api/resume"
 
@@ -8,6 +8,6 @@ def test_ansible_runner_run(**kwargs):
         def __init__(self):
             self.status = "success"
             self.rc = 0
-            self.stdout = TextIO()
+            self.stdout = StringIO("some initial text data")
 
     return Runner()