diff --git a/python/src/functions/generate_treasury_report.py b/python/src/functions/generate_treasury_report.py
index 151359a6..4b1df091 100644
--- a/python/src/functions/generate_treasury_report.py
+++ b/python/src/functions/generate_treasury_report.py
@@ -81,14 +81,14 @@ def handle(event: ProjectLambdaPayload, context: Context):
 
     try:
         payload = ProjectLambdaPayload.model_validate(event)
-    except Exception:
-        logger.exception("Exception parsing Project event payload")
+    except Exception as e:
+        logger.exception("Exception parsing Project event payload", e)
         return {"statusCode": 400, "body": "Bad Request"}
 
     try:
         process_event(payload, logger)
-    except Exception:
-        logger.exception("Exception processing Project file generation event")
+    except Exception as e:
+        logger.exception("Exception processing Project file generation event", e)
         return {"statusCode": 500, "body": "Internal Server Error"}
 
     return {"statusCode": 200, "body": "Success"}
@@ -120,9 +120,9 @@ def process_event(payload: ProjectLambdaPayload, logger: structlog.stdlib.BoundL
     project_use_code = None
     try:
         project_use_code = ProjectType.from_project_name(payload.ProjectType)
-    except ValueError:
+    except ValueError as e:
         logger.error(
-            f"Project name '{payload.ProjectType}' is not a recognized project type."
+            f"Project name '{payload.ProjectType}' is not a recognized project type.", e
         )
         return {"statusCode": 400, "body": "Invalid project name"}
 
@@ -154,7 +154,7 @@ def process_event(payload: ProjectLambdaPayload, logger: structlog.stdlib.BoundL
             logger=logger,
         )
 
-        output_workbook = load_workbook(filename=output_file, read_only=True)
+        output_workbook = load_workbook(filename=output_file, read_only=False)
         output_sheet = output_workbook["Baseline"]
 
         ### 3) Open files in the uploadsToRemove parameter.
@@ -196,7 +196,7 @@ def process_event(payload: ProjectLambdaPayload, logger: structlog.stdlib.BoundL
                     error = e.response.get("Error") or {}
                     if error.get("Code") == "404":
                         logger.exception(
-                            f"Expected to find an upload with key: {file_info.objectKey}"
+                            f"Expected to find an upload with key: {file_info.objectKey}", e
                         )
                     raise
                 # Load workbook
@@ -283,7 +283,7 @@ def download_output_file(
         except ClientError as e:
             error = e.response.get("Error") or {}
             if error.get("Code") == "404":
-                logger.exception("Expected to find an existing treasury output report")
+                logger.exception("Expected to find an existing treasury output report", e)
                 raise
         highest_row_num = max(project_agency_id_to_row_map.values())
     else:
@@ -322,7 +322,8 @@ def get_existing_output_metadata(
             error = e.response.get("Error") or {}
             if error.get("Code") == "404":
                 logger.info(
-                    "There is no existing metadata file for this treasury report"
+                    "There is no existing metadata file for this treasury report",
+                    e
                 )
                 existing_file = None
             else:
@@ -381,7 +382,8 @@ def get_outdated_projects_to_remove(
                 error = e.response.get("Error") or {}
                 if error.get("Code") == "404":
                     logger.exception(
-                        f"Expected to find an upload with key: {file_info.objectKey}"
+                        f"Expected to find an upload with key: {file_info.objectKey}",
+                        e
                     )
                 raise
             # Load workbook