Update app.py

app.py

@@ -27,8 +27,11 @@ df3_questions = df3["question"].values
 df3_links = df3["url"].values
 
 def arabic_word_tokenize(text):
+    if not isinstance(text, str):
+        return []
     return re.findall(r'\w+', text)
 
+
 def compute_word_overlap(query, questions):
     query_words = set(arabic_word_tokenize(query))
     overlaps = []