ruby on rails - Carrierwave default Image not showing in Heroku -


hi working carrierwave , using default image below.

def default_url  actioncontroller::base.helpers.asset_path([version_name, "image.png"].compact.join('_')) end

it working fine in development image not loading in production in heroku.

the image url showing below both in production , development.

/assets/tiny_thumb_image.png

but have checked 

puts helper.asset_path("small_thumb_image.png")

in heroku console. output below fingerprints included in filename.

/assets/tiny_thumb_image-2372152cb18fd9aac1004f781047ee6a.png

i have included 

config.serve_static_assets = true

try uploading default image 

assets/images

path, how works me


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