Changed code to support older Python versions

controllers.py

@@ -132,7 +132,7 @@ class LogsController:
     def __init__(self):
         self.log_file = Path(Config.LOG_FILE)
 
-    def stream(self) -> Generator[str]:
+    def stream(self):
         with self.log_file.open() as f:
             f.seek(0, 2)
             while True:
@@ -142,7 +142,7 @@ class LogsController:
                 else:
                     sleep(0.1)
 
-    def tail(self, back: int = 10) -> Generator[str]:
+    def tail(self, back: int = 10):
         with self.log_file.open() as f:
             for line in deque(f, maxlen=back):
                 yield line