Fix logger creation guard

trains/task.py

@@ -1557,11 +1557,10 @@ class Task(_Task):
         :return: Logger object
         """
 
-        # do not recreate logger after task was closed/quit
-        if self._at_exit_called:
-            raise ValueError("Cannot use Task Logger after task was closed")
-
         if not self._logger:
+            # do not recreate logger after task was closed/quit
+            if self._at_exit_called:
+                raise ValueError("Cannot use Task Logger after task was closed")
             # force update of base logger to this current task (this is the main logger task)
             self._setup_log(replace_existing=self.is_main_task())
             # Get a logger object