Update app.py

app.py

@@ -94,7 +94,7 @@ def classify_text(text, tokenizer, model):
  
 def get_source_credibility(url_or_domain):
     if not url_or_domain:
-        return None, 0.5, "Unknown Source"
+        return None, 0.5, "Unknown Source", "#94a3b8"
     try:
         domain = urlparse(url_or_domain).netloc.lower().replace("www.", "")
     except Exception: