You had this issue previously, with dark mode on your device:
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As far as I am aware, you cannot make a filepath to a file in assets with a compiled app using the File component. This has to be done in java in an extension. We have shown you the alternative, use it.
You could make a procedure to generate a placeholder file for the asset you want (which is overwritten by a call to a different file) which makes the blocks somewhat simpler: