fix bug

chatpdf.py

@@ -39,7 +39,7 @@ class ChatPDF:
         elif gen_model_type == "llama":
             self.gen_model = LlamaModel(gen_model_type, gen_model_name_or_path, lora_name=lora_model_name_or_path)
         elif gen_model_type == "t5":
-            self.gen_model = pipeline('text2text-generation', model=gen_model_name_or_path, device=0)
+            self.gen_model = pipeline('text2text-generation', model=gen_model_name_or_path)
         else:
             raise ValueError('gen_model_type must be chatglm or llama.')
         self.history = None