diff --git a/bin/run_pyl b/bin/run_pyl
index 4815d9fd..5f07b141 100755
--- a/bin/run_pyl
+++ b/bin/run_pyl
@@ -39,10 +39,7 @@ function run_autofixers() {
   fi
 
   python_dirs=$(get_python_dirs)
-  # python_files=$(find $python_dirs -type f -name "*.py" ! -name '.null-ls*' ! -name '_null-ls*')
-  # Don't check things in git-ignore:
-  python_files=$(git ls-files $python_dirs | grep .py$)
-  ruff --fix $python_files
+  ruff --fix $python_dirs || echo ''
 }
 
 function run_pre_commmit() {
diff --git a/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_instances_controller.py b/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_instances_controller.py
index 628215fe..a17b1d34 100644
--- a/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_instances_controller.py
+++ b/spiffworkflow-backend/src/spiffworkflow_backend/routes/process_instances_controller.py
@@ -435,6 +435,16 @@ def process_instance_task_list(
     bpmn_process_ids = []
     if bpmn_process_guid:
         bpmn_process = BpmnProcessModel.query.filter_by(guid=bpmn_process_guid).first()
+        if bpmn_process is None:
+            raise ApiError(
+                error_code="bpmn_process_not_found",
+                message=(
+                    f"Cannot find a bpmn process with guid '{bpmn_process_guid}' for process instance"
+                    f" '{process_instance.id}'"
+                ),
+                status_code=400,
+            )
+
         bpmn_processes = TaskService.bpmn_process_and_descendants([bpmn_process])
         bpmn_process_ids = [p.id for p in bpmn_processes]