diff --git a/kiauh/components/klipper/klipper_dialogs.py b/kiauh/components/klipper/klipper_dialogs.py
index ada75b6..9964f66 100644
--- a/kiauh/components/klipper/klipper_dialogs.py
+++ b/kiauh/components/klipper/klipper_dialogs.py
@@ -9,7 +9,7 @@
 
 import textwrap
 from enum import Enum, unique
-from typing import List, Union, Literal
+from typing import List
 
 from core.instance_manager.base_instance import BaseInstance
 from core.menus.base_menu import print_back_footer
diff --git a/kiauh/components/log_uploads/log_upload_utils.py b/kiauh/components/log_uploads/log_upload_utils.py
index 3a8029a..e54ca3a 100644
--- a/kiauh/components/log_uploads/log_upload_utils.py
+++ b/kiauh/components/log_uploads/log_upload_utils.py
@@ -50,5 +50,5 @@ def upload_logfile(logfile: LogFile) -> None:
             Logger.print_ok("Upload successful! Access it via the following link:")
             Logger.print_ok(f">>>> {link}", False)
         except Exception as e:
-            Logger.print_error(f"Uploading logfile failed!")
+            Logger.print_error("Uploading logfile failed!")
             Logger.print_error(str(e))
diff --git a/kiauh/components/webui_client/__init__.py b/kiauh/components/webui_client/__init__.py
index 6f21f4a..bb87c0e 100644
--- a/kiauh/components/webui_client/__init__.py
+++ b/kiauh/components/webui_client/__init__.py
@@ -8,7 +8,7 @@
 # ======================================================================= #
 
 from pathlib import Path
-from typing import Literal, TypedDict, Set
+from typing import Literal, TypedDict
 
 from core.backup_manager import BACKUP_ROOT_DIR
 
diff --git a/kiauh/core/instance_manager/instance_manager.py b/kiauh/core/instance_manager/instance_manager.py
index 0a5750b..07ecdd9 100644
--- a/kiauh/core/instance_manager/instance_manager.py
+++ b/kiauh/core/instance_manager/instance_manager.py
@@ -16,34 +16,34 @@ from core.instance_manager.base_instance import BaseInstance
 from utils.constants import SYSTEMD
 from utils.logger import Logger
 
-I = TypeVar(name="I", bound=BaseInstance, covariant=True)
+T = TypeVar(name="T", bound=BaseInstance, covariant=True)
 
 
 # noinspection PyMethodMayBeStatic
 class InstanceManager:
-    def __init__(self, instance_type: I) -> None:
+    def __init__(self, instance_type: T) -> None:
         self._instance_type = instance_type
-        self._current_instance: Optional[I] = None
+        self._current_instance: Optional[T] = None
         self._instance_suffix: Optional[str] = None
         self._instance_service: Optional[str] = None
         self._instance_service_full: Optional[str] = None
         self._instance_service_path: Optional[str] = None
-        self._instances: List[I] = []
+        self._instances: List[T] = []
 
     @property
-    def instance_type(self) -> I:
+    def instance_type(self) -> T:
         return self._instance_type
 
     @instance_type.setter
-    def instance_type(self, value: I):
+    def instance_type(self, value: T):
         self._instance_type = value
 
     @property
-    def current_instance(self) -> I:
+    def current_instance(self) -> T:
         return self._current_instance
 
     @current_instance.setter
-    def current_instance(self, value: I) -> None:
+    def current_instance(self, value: T) -> None:
         self._current_instance = value
         self.instance_suffix = value.suffix
         self.instance_service = value.get_service_file_name()
@@ -78,11 +78,11 @@ class InstanceManager:
         self._instance_service_path = value
 
     @property
-    def instances(self) -> List[I]:
+    def instances(self) -> List[T]:
         return self.find_instances()
 
     @instances.setter
-    def instances(self, value: List[I]):
+    def instances(self, value: List[T]):
         self._instances = value
 
     def create_instance(self) -> None:
@@ -182,7 +182,7 @@ class InstanceManager:
             Logger.print_error(f"{e}")
             raise
 
-    def find_instances(self) -> List[I]:
+    def find_instances(self) -> List[T]:
         name = self.instance_type.__name__.lower()
         pattern = re.compile(f"^{name}(-[0-9a-zA-Z]+)?.service$")
         excluded = self.instance_type.blacklist()
diff --git a/kiauh/utils/filesystem_utils.py b/kiauh/utils/filesystem_utils.py
index 0406bc2..86306bd 100644
--- a/kiauh/utils/filesystem_utils.py
+++ b/kiauh/utils/filesystem_utils.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-import os
 
 # ======================================================================= #
 #  Copyright (C) 2020 - 2024 Dominik Willner <th33xitus@gmail.com>        #
@@ -209,11 +208,10 @@ def add_config_section(
 
         cm.write_config()
 
-def add_config_section_at_top(
-    section: str,
-    instances: List[B]):
+
+def add_config_section_at_top(section: str, instances: List[B]):
     for instance in instances:
-        tmp_cfg = tempfile.NamedTemporaryFile(mode="w" ,delete=False)
+        tmp_cfg = tempfile.NamedTemporaryFile(mode="w", delete=False)
         tmp_cfg_path = Path(tmp_cfg.name)
         cmt = ConfigManager(tmp_cfg_path)
         cmt.config.add_section(section)