Update app.py

app.py

@@ -12,7 +12,7 @@ def load_data():
         if len(row) < 5:
             print(f"Skipping problematic line: {row}")
             continue
-        orto, ppos, phon1, phon2, comm, *pronunciations = row
+        orto, ppos, phon1, phon2, comm, *pronunciations = map(lambda x: x if isinstance(x, str) else "", row)
         if orto == '---':
             current_lemma = None
         elif current_lemma is None: