The lack of a fingerprint in the file request suggests that you run this during the development process. I am also going to assume that this application is updated from an old version of Rails.
Any images must be in the folder / assets / images for the pipeline to work.
In addition, you do not need to precompile it in development mode.
Delete the public / assets folder, delete the tmp / cache / assets folder and restart the server.
If this image is in the right place, it should work.
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