fixing empty seq bug

app.py

@@ -64,6 +64,9 @@ def generate_smiles_for_sequence(protein_sequence: str, num_samples: int, reques
 
     return ",\n".join(unique_smiles)
 
+def enable_btn(seq: str):
+    return gr.Button.update(interactive=len(seq) >= 10)
+
 
 def log_run(client_ip: str, seq: str):
     rec = {
@@ -138,7 +141,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
                     "More attempts increase runtime but can improve diversity."
                 )
             )
-            submit_btn = gr.Button("Generate Molecules", variant="primary")
+            submit_btn = gr.Button("Generate Molecules", variant="primary", interactive=False)
 
         with gr.Column(scale=3):
             output_smiles = gr.Textbox(
@@ -148,6 +151,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
                 interactive=True
             )
 
+
     gr.Markdown("### Examples")
     gr.Examples(
         examples=[
@@ -168,6 +172,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
         *Model developed by Gero AI. For more details, check out the [original repository](https://github.com/gero-science/ProtoBind-Diff).*
         """
     )
+    protein_sequence.change(enable_btn, inputs=protein_sequence, outputs=submit_btn)
 
     submit_btn.click(
         fn=generate_smiles_for_sequence,