Update app.py

app.py

@@ -753,17 +753,45 @@ with gr.Blocks(
         outputs=[download_file, download_info]
     )
     
-    # Validate predictions
+    # # Validate predictions
+    # def handle_validation(file, model_name, author, description):
+    #     report, predictions = validate_submission(file, model_name, author, description)
+    #     is_valid = predictions is not None
+    #     return report, predictions, predictions, is_valid
+
     def handle_validation(file, model_name, author, description):
         report, predictions = validate_submission(file, model_name, author, description)
-        is_valid = predictions is not None
-        return report, predictions, predictions, is_valid
+        valid = predictions is not None
+    
+        # Build the four returns:
+        #  1) report Markdown
+        #  2) store predictions in state
+        #  3) store validation info in state
+        #  4) enable or disable the submit button
+        if valid:
+            return (
+                report,
+                predictions,                   # predictions_validated state
+                predictions,                   # validation_info_state (you can store whatever you like here)
+                gr.update(interactive=True)    
+            )
+        else:
+            return (
+                report,
+                None,
+                None,
+                gr.update(interactive=False)   # <— this *disables* the button
+            )
+
     
     validate_btn.click(
         fn=handle_validation,
         inputs=[predictions_file, model_name_input, author_input, description_input],
         outputs=[validation_output, predictions_validated, validation_info_state, submit_btn]
     )
+
+
+    
     
     # Submit for evaluation
     def handle_submission(predictions, model_name, author, description, validation_info):