extra filename option added

freqtrade/strategy/hyper.py

@@ -112,6 +112,9 @@ class HyperStrategyMixin:
         self._ft_load_params(protection_params, 'protection', hyperopt)
 
     def load_params_from_file(self) -> Dict:
+        filename_str = self.__class__.__name__
+        filename = Path(filename_str).with_suffix('.json')
+        if not filename.is_file():
             filename_str = getattr(self, '__file__', '')
             if not filename_str:
                 return {}