Update app.py

app.py

@@ -103,8 +103,8 @@ def chat():
     i_s=tokenizer.encode_plus(h_s,i,return_tensors="pt")
     outputs=model.generate(**i_s,max_length=60)
     response=tokenizer.decode(outputs[0],skip_special_tokens=True).strip()
-    c_h.appned(i)
-    c_h.append(response)
+    ch.appned(i)
+    ch.append(response)
     return response
 if __name__ == "__main__":
     chat()