Update app.py

app.py

@@ -55,7 +55,7 @@ def add_animated_space_rocks(name):
     bpy.context.scene.render.fps = 10
     duration = 2
     radius=2
-    space_rock.name = ""+name+"_"+random.randint(1,100)+""
+    space_rock.name = ""+name+"_"+str(random.randint(1,100))+""
     bpy.ops.mesh.primitive_uv_sphere_add(radius=random.uniform(0.03, 0.1), location=(random.uniform(-10, 10), random.uniform(-10, 10), random.uniform(-4, 9)))
     space_rock = bpy.context.active_object
     space_rock.keyframe_insert(data_path="location", frame=1)