Update app.py

app.py

@@ -82,7 +82,7 @@ def make_uncond_seq(seq_len, model_type, pred_structure):
 
         return generated_sequence, molhtml
     else:
-        return generated_sequence
+        return generated_sequence, None
 
 def make_cond_seq(seq_len, msa_file, model_type, pred_structure):
     if model_type == "EvoDiff-MSA":
@@ -96,7 +96,7 @@ def make_cond_seq(seq_len, msa_file, model_type, pred_structure):
 
         return generated_sequence, molhtml
     else:
-        return generated_sequence
+        return generated_sequence, None
 
 usg_app = gr.Interface(
             fn=make_uncond_seq,