Update app.py

app.py

@@ -276,7 +276,7 @@ with gr.Blocks() as demo:
         inp=CofoldingInput(label="Input")
         hard_case = gr.Checkbox(False, label="Hard case (increase MAXCYCLE to 10)")
         # only allow running the predictions if local 
-        if os.environ.get("SPACE_HOST")!="":
+        if os.environ.get("SPACE_HOST")!=None:
             dry_run = gr.Checkbox(True, label="Only generate input files (dry run)", interactive=False)
         else:
             dry_run = gr.Checkbox(True, label="Only generate input files (dry run)")