Each NFT is usually represented with token URI, it is URL that points to JSON file which contains metadata of NFT. Problem arises because all tokens from RamNFT
contract return empty token URI when calling RamNFT::tokenURI
function. This especially concerning because developers inherited code from ERC721URIStorage
contract, which means they probably wanted to set token URIs for each token.
Tokens return empty token URI which should not be desired.
Manual review
Add valid token URI which represents JSON file for each token. In this scenario it could be same token URI for all tokens.
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