diff --git a/src/backend/core/models.py b/src/backend/core/models.py
index 4c24662..c3a8c29 100644
--- a/src/backend/core/models.py
+++ b/src/backend/core/models.py
@@ -814,7 +814,7 @@ class Team(MP_Node, BaseModel):
             except AttributeError:
                 try:
                     role = self.accesses.filter(user=user).values("role")[0]["role"]
-                except (TeamAccess.DoesNotExist, IndexError):
+                except TeamAccess.DoesNotExist, IndexError:
                     role = None
 
             is_owner_or_admin = role in [RoleChoices.OWNER, RoleChoices.ADMIN]
@@ -901,7 +901,7 @@ class TeamAccess(BaseModel):
                     role = self._meta.model.objects.filter(
                         team=self.team_id, user=user
                     ).values("role")[0]["role"]
-                except (self._meta.model.DoesNotExist, IndexError):
+                except self._meta.model.DoesNotExist, IndexError:
                     role = None
 
             is_team_owner_or_admin = role in [RoleChoices.OWNER, RoleChoices.ADMIN]
@@ -1100,7 +1100,7 @@ class Invitation(BaseInvitation):
                     role = self.team.accesses.filter(user=user).values("role")[0][
                         "role"
                     ]
-                except (self._meta.model.DoesNotExist, IndexError):
+                except self._meta.model.DoesNotExist, IndexError:
                     role = None
 
             can_delete = role in [RoleChoices.OWNER, RoleChoices.ADMIN]
diff --git a/src/backend/core/plugins/urls.py b/src/backend/core/plugins/urls.py
index ad25cd0..0a640be 100644
--- a/src/backend/core/plugins/urls.py
+++ b/src/backend/core/plugins/urls.py
@@ -9,7 +9,7 @@ plugins_urlpatterns = []
 for app in settings.INSTALLED_PLUGINS:
     try:
         plugins_urlpatterns.append(path("", include(f"{app}.urls")))
-    except (ImportError, AttributeError):
+    except ImportError, AttributeError:
         # Skip if app doesn't have urls.py
         continue
 
diff --git a/src/backend/mailbox_manager/models.py b/src/backend/mailbox_manager/models.py
index 4999141..a4a7cd9 100644
--- a/src/backend/mailbox_manager/models.py
+++ b/src/backend/mailbox_manager/models.py
@@ -111,7 +111,7 @@ class MailDomain(BaseModel):
         if user.is_authenticated:
             try:
                 role = self.accesses.filter(user=user).values("role")[0]["role"]
-            except (MailDomainAccess.DoesNotExist, IndexError):
+            except MailDomainAccess.DoesNotExist, IndexError:
                 role = None
 
         is_owner_or_admin = role in [
@@ -224,7 +224,7 @@ class MailDomainAccess(BaseModel):
                 authenticated_user_role = user.mail_domain_accesses.get(
                     domain=self.domain
                 ).role
-            except (MailDomainAccess.DoesNotExist, IndexError):
+            except MailDomainAccess.DoesNotExist, IndexError:
                 return []
 
         # only an owner can set an owner role
@@ -252,7 +252,7 @@ class MailDomainAccess(BaseModel):
         if user.is_authenticated:
             try:
                 role = user.mail_domain_accesses.filter(domain=self.domain).get().role
-            except (MailDomainAccess.DoesNotExist, IndexError):
+            except MailDomainAccess.DoesNotExist, IndexError:
                 role = None
 
         is_owner_or_admin = role in [
@@ -459,7 +459,7 @@ class MailDomainInvitation(BaseInvitation):
                     role = self.domain.accesses.filter(user=user).values("role")[0][
                         "role"
                     ]
-                except (self._meta.model.DoesNotExist, IndexError):
+                except self._meta.model.DoesNotExist, IndexError:
                     role = None
 
             can_delete = role in [
@@ -515,7 +515,7 @@ class Alias(BaseModel):
         edit aliases, but also viewer if the alias points to their email."""
         try:
             role = user.mail_domain_accesses.get(domain=self.domain).role
-        except (MailDomainAccess.DoesNotExist, IndexError):
+        except MailDomainAccess.DoesNotExist, IndexError:
             role = None
 
         is_owner_or_admin = role in [