diff --git a/core/tasks.py b/core/tasks.py
index 6861197a..6d4e1838 100644
--- a/core/tasks.py
+++ b/core/tasks.py
@@ -20,7 +20,7 @@ logger = get_task_logger(__name__)
 
 
 @shared_task(queue="stock_updater")
-def update_products_task():
+def update_products_task() -> tuple[bool, str]:
     """
     Run a background task to update product data and manage stale products.
 
@@ -44,7 +44,7 @@ def update_products_task():
             vendor = vendor_class()
             try:
                 vendor.update_stock()
-            except VendorInactiveError as vie:
+            except VendorInactiveError:
                 logger.info(f"Skipping {vendor_class} due to inactivity")
             except Exception as e:
                 logger.warning(f"Skipping {vendor_class} due to error: {e!s}")
@@ -57,7 +57,7 @@ def update_products_task():
 
 
 @shared_task(queue="default")
-def update_orderproducts_task():
+def update_orderproducts_task() -> tuple[bool, str]:
     """
     Updates the statuses of order products for all vendors listed in the
     `vendors_classes`. Each vendor class in the `vendors_classes` list is
@@ -79,7 +79,7 @@ def update_orderproducts_task():
 
 
 @shared_task(queue="default")
-def set_default_caches_task():
+def set_default_caches_task() -> tuple[bool, str]:
     """
     Task to set default caches in the application's memory.
 
@@ -95,7 +95,7 @@ def set_default_caches_task():
 
 
 @shared_task(queue="default")
-def remove_stale_product_images():
+def remove_stale_product_images() -> tuple[bool, str]:
     """
     Removes stale product images from the products directory by identifying directories
     whose names do not match any UUIDs currently present in the database.
diff --git a/core/vendors/__init__.py b/core/vendors/__init__.py
index 4ee378f8..f44896d8 100644
--- a/core/vendors/__init__.py
+++ b/core/vendors/__init__.py
@@ -60,7 +60,6 @@ class VendorError(Exception):
 
 
 class VendorInactiveError(VendorError):
-
     pass
 
 
diff --git a/evibes/settings/dbbackup.py b/evibes/settings/dbbackup.py
index cec40f83..fca73a7e 100644
--- a/evibes/settings/dbbackup.py
+++ b/evibes/settings/dbbackup.py
@@ -38,10 +38,7 @@ if getenv("DBBACKUP_HOST") and getenv("DBBACKUP_USER") and getenv("DBBACKUP_PASS
             DBBACKUP_STORAGE = "evibes.ftpstorage.AbsoluteFTPStorage"
             DBBACKUP_STORAGE_OPTIONS = {
                 "location": (
-                    f"ftp://{getenv('DBBACKUP_USER')}:"
-                    f"{getenv('DBBACKUP_PASS')}@"
-                    f"{getenv('DBBACKUP_HOST')}:21/"
-                    f"{raw_path}"
+                    f"ftp://{getenv('DBBACKUP_USER')}:{getenv('DBBACKUP_PASS')}@{getenv('DBBACKUP_HOST')}:21/{raw_path}"
                 ),
             }
 
diff --git a/payments/signals.py b/payments/signals.py
index 1dafc8f5..9e9078b1 100644
--- a/payments/signals.py
+++ b/payments/signals.py
@@ -1,3 +1,6 @@
+import logging
+import traceback
+
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 
@@ -6,6 +9,8 @@ from payments.models import Balance, Transaction
 from payments.utils.emailing import balance_deposit_email
 from vibes_auth.models import User
 
+logger = logging.getLogger("django")
+
 
 @receiver(post_save, sender=User)
 def create_balance_on_user_creation_signal(instance, created, **_kwargs):
@@ -27,6 +32,7 @@ def process_transaction_changes(instance, created, **_kwargs):
             gateway.process_transaction(instance)
         except Exception as e:
             instance.process = {"status": "ERRORED", "error": str(e)}
+            logger.error(f"Error processing transaction {instance.uuid}: {e}\n{traceback.format_exc()}")
     if not created:
         status = str(instance.process.get("status", "")).lower()
         success = instance.process.get("success", False)