diff --git a/da_detector.py b/da_detector.py
index 5638369..4b4013e 100755
--- a/da_detector.py
+++ b/da_detector.py
@@ -104,9 +104,13 @@ class da_detector:
 
 		# may contain None values if not found, hence uncleansed
 		uncleansed_probabilities = []
-		for ngram in ngrams:
-			uncleansed_probabilities.append(lang_probs.get(ngram))
-		return self.replace_nones(uncleansed_probabilities)
+		try:
+			for ngram in ngrams:
+				uncleansed_probabilities.append(lang_probs.get(ngram))
+			cleansed_probabs = self.replace_nones(uncleansed_probabilities)
+		except Exception as e:
+			raise e
+		return cleansed_probabs
 
 	def replace_nones(self, probabilities: list):
 		if not isinstance(probabilities, list):