For collection “0x77640cf3f89a4f1b5ca3a1e5c87f3f5b12ebf87e”, this is the response:
Here: The token_uri given is https://aaa-microservice.herokuapp.com/token/3317 which is invalid.
The correct token_uri for token 3317 in the same collection is angryapes.mypinata.cloud/ipfs/QmPhREWNvNbKApuK577BpJRrjmEGYxsMkaWcgZiqtKaJ1Q/3317 which I got from Etherscan Read Contract URL.
I got the answer for why Metadeta might be null: https://docs.moralis.io/misc/faq#why-is-metadata-null-for-some-nfts but token_uri is also invalid so there is no way to get metadata now.
Any idea why is this happening?