Removing bugs from random seed

app.py

@@ -74,5 +74,8 @@ try:
 except:
     random_seed = random.randint(1, 1000)
 
+if random_seed is None:
+    random_seed = random.randint(1, 1000)
+    
 iface = gr.Interface(fn=generate_random_walk, inputs=[iters, step_size, random_seed], outputs="image", title="2-D Random Walk Plot", description="Steps along NEWS directions only")
 iface.launch()