Update app.py

app.py

@@ -20,8 +20,13 @@ st.title("Google Cloud NLP Text Classifier")
 st.write("This tool classifies text into predefined categories.")
 
 def sample_classify_text(text_content):
-    # Assuming service_account_info is set in your Streamlit secrets
-    service_account_info = json.loads(st.secrets["google_nlp"])
+    try:
+        # Assuming service_account_info is set in your Streamlit secrets
+        service_account_info = json.loads(st.secrets["google_nlp"])
+    except json.JSONDecodeError:
+        st.error("Invalid or empty JSON in 'google_nlp' secret.")
+        return
+
     credentials = service_account.Credentials.from_service_account_info(
         service_account_info, scopes=["https://www.googleapis.com/auth/cloud-platform"]
     )