Issue while open json file

[hishampro5]

We are trying to open json file same as lcpl file but we get an error "An error occurred while attempting to decode the content. "

file:///data/user/0/com.samawy.readerapp/files/manifest_1007319.json

val url = File(book.href.toSafetyString()).toUrl()

			assetRetriever.retrieve(url).getOrElse {
				return Try.failure(
					OpeningError.PublicationError(
						com.samawy.readerapp.readium.testapp.domain.PublicationError(it)
					)
				)
			} 

readium_version = '3.0.3'

json File

manifest_1007319.json

error image :

FYI : The book is not LCP-protected. but you need pass ( Signature , App-Check , Authorization )