fixed url_content var error

app.py

@@ -435,6 +435,7 @@ def generate_and_format(
     user_comments: str = None,
 ):
     content_string = ""
+    url_content = None
     if google_search_check:
         date_from = build_date(year_from, month_from, day_from)
         date_to = build_date(year_to, month_to, day_to)