null return trial

pipeline.py

@@ -3,3 +3,5 @@ from transformers import AutoTokenizer,AutoModelForQuestionAnswering,QuestionAns
 class PreTrainedPipeline(QuestionAnsweringPipeline):
   def __init__(self,path=""):
     return super().__init__(tokenizer=AutoTokenizer.from_pretrained(path),model=AutoModelForQuestionAnswering.from_pretrained(path),align_to_words=False)
+  def __call__(self,*kwargs):
+    return {}