Update app.py

app.py

@@ -3,11 +3,13 @@ import pandas as pd
 from transformers import pipeline
 
 # Load the anomalies data and convert all cells to strings
-df = pd.read_csv('anomalies.csv', sep=',', decimal='.')
-df = df.applymap(str)
+data = pd.read_csv('anomalies.csv', sep=',', decimal='.')
+df = pd.DataFrame(data)
+df.fillna("", inplace=True)
 print(df.head())
 
 def response(user_question):
+    user_question = user_question.astype(str)
     if not isinstance(user_question, str):
         raise TypeError(f"Esperado uma string para a pergunta, mas recebeu {type(user_question)}")