fix(pipe): fix get from none data in file pipe

project_manager/pipe/type/file.py

@@ -36,7 +36,8 @@ class FileData:
     def get(self, key: str):
         if self._data is None and self._filepath.exists():
             self._load_data()
-        return self._data.get(key)
+        if self._data:
+            return self._data.get(key)
 
     def __bool__(self):
         return self._filepath.exists()