diff --git a/src/registrar/fixtures_applications.py b/src/registrar/fixtures_applications.py
index 29e95e02b..d1ef25211 100644
--- a/src/registrar/fixtures_applications.py
+++ b/src/registrar/fixtures_applications.py
@@ -188,7 +188,7 @@ class DomainApplicationFixture:
         # This bundles them all together, and then saves it in a single call.
         with transaction.atomic():
             cls._create_applications(users)
-    
+
     @classmethod
     def _create_applications(cls, users):
         """Creates DomainApplications given a list of users"""
@@ -245,4 +245,4 @@ class DomainFixture(DomainApplicationFixture):
                 application.investigator = random.choice(users)
 
             application.approve(send_email=False)
-            application.save()
\ No newline at end of file
+            application.save()
diff --git a/src/registrar/fixtures_users.py b/src/registrar/fixtures_users.py
index 830adb5bf..e89809484 100644
--- a/src/registrar/fixtures_users.py
+++ b/src/registrar/fixtures_users.py
@@ -190,8 +190,8 @@ class UserFixture:
         # Lumped under .atomic to ensure we don't make redundant DB calls.
         # This bundles them all together, and then saves it in a single call.
         # This is slightly different then bulk_create or bulk_update, in that
-        # you still get the same behaviour of .save(), but those incremental 
-        # steps now do not need to close/reopen a db connection, 
+        # you still get the same behaviour of .save(), but those incremental
+        # steps now do not need to close/reopen a db connection,
         # instead they share one.
         with transaction.atomic():
             cls.load_users(cls, cls.ADMINS, "full_access_group")
diff --git a/src/registrar/tests/common.py b/src/registrar/tests/common.py
index f7bca00be..a195ccb63 100644
--- a/src/registrar/tests/common.py
+++ b/src/registrar/tests/common.py
@@ -562,11 +562,11 @@ def completed_application(
     )
     if not investigator:
         investigator, _ = User.objects.get_or_create(
-            username="incrediblyfakeinvestigator", 
-            first_name = "Joe",
-            last_name = "Bob"
-            is_staff=True
-            )
+            username="incrediblyfakeinvestigator",
+            first_name="Joe",
+            last_name="Bob",
+            is_staff=True,
+        )
     domain_application_kwargs = dict(
         organization_type="federal",
         federal_type="executive",
diff --git a/src/registrar/utility/errors.py b/src/registrar/utility/errors.py
index a4359b0c7..fba3410f6 100644
--- a/src/registrar/utility/errors.py
+++ b/src/registrar/utility/errors.py
@@ -70,23 +70,25 @@ class GenericError(Exception):
     def get_error_message(self, code=None):
         return self._error_mapping.get(code)
 
-# (Q for reviewers) What should this be called? 
+
+# (Q for reviewers) What should this be called?
 # Not a fan of this name.
 class FSMErrorCodes(IntEnum):
     """Used when doing FSM transitions.
     Overview of generic error codes:
-        - 1 APPROVE_DOMAIN_IN_USE The domain is already in use 
+        - 1 APPROVE_DOMAIN_IN_USE The domain is already in use
         - 2 APPROVE_NO_INVESTIGATOR No investigator is assigned when approving
         - 3 APPROVE_INVESTIGATOR_NOT_STAFF Investigator is a non-staff user
         - 4 APPROVE_INVESTIGATOR_NOT_SUBMITTER The form submitter is not the investigator
     """
+
     APPROVE_DOMAIN_IN_USE = 1
     APPROVE_NO_INVESTIGATOR = 2
     APPROVE_INVESTIGATOR_NOT_STAFF = 3
     APPROVE_INVESTIGATOR_NOT_SUBMITTER = 4
 
 
-# (Q for reviewers) What should this be called? 
+# (Q for reviewers) What should this be called?
 # Not a fan of this name.
 class ApplicationStatusError(Exception):
     """
@@ -95,18 +97,12 @@ class ApplicationStatusError(Exception):
     """
 
     _error_mapping = {
-        FSMErrorCodes.APPROVE_DOMAIN_IN_USE: (
-            "Cannot approve. Requested domain is already in use."
-        ),
-        FSMErrorCodes.APPROVE_NO_INVESTIGATOR: (
-            "Cannot approve. No investigator was assigned."
-        ),
-        FSMErrorCodes.APPROVE_INVESTIGATOR_NOT_STAFF: (
-            "Cannot approve. Investigator is not a staff user."
-        ),
+        FSMErrorCodes.APPROVE_DOMAIN_IN_USE: ("Cannot approve. Requested domain is already in use."),
+        FSMErrorCodes.APPROVE_NO_INVESTIGATOR: ("Cannot approve. No investigator was assigned."),
+        FSMErrorCodes.APPROVE_INVESTIGATOR_NOT_STAFF: ("Cannot approve. Investigator is not a staff user."),
         FSMErrorCodes.APPROVE_INVESTIGATOR_NOT_SUBMITTER: (
             "Cannot approve. Only the assigned investigator can approve this application."
-        )
+        ),
     }
 
     def __init__(self, *args, code=None, **kwargs):