fix:service some bug

src/service.py

@@ -1,6 +1,6 @@
 import bentoml
 import joblib
-
+import re
 my_image = bentoml.images.Image(python_version="3.10") \
     .python_packages("scikit-learn", "numpy")
 
@@ -20,6 +20,7 @@ class NewsClassifierService:
     def classify(self,text: str) -> dict:
         categories = ['Competition News','financial news','Medical news','sports news']
         cleaned_text = text.strip().replace("\n", "")
+        cleaned_text = re.sub(r'[\x00-\x1F]', '', cleaned_text)
         token_text =self.model_vectorizer.transform([cleaned_text])
         prediction = self.model_logistic.predict(token_text)
         print(f"Prediction: {prediction}")