improved validation

app.py

@@ -153,7 +153,11 @@ def __isInvalidResponse(response: str):
         return True
 
     # lot of repeating words
-    if re.findall(r'\b(\w+)(\s+\1){2,}\b', response) == 0:
+    if len(re.findall(r'\b(\w+)(\s+\1){2,}\b', response)) > 1:
+        return True
+
+    # lots of paragraphs
+    if len(re.findall(r'\n\n', response)) > 15:
         return True
 
     # json response without json separator