The polygon server in the production environment has failed.

[Erreth-Akbe]

https://server.sparklink.io/api/v1/nft/list?owner=0xdDaf409D202202975A04B64CDd1cA0826bA772AC&chain=matic
Corresponding to this request, the server should return all NFTs owned by the address, but returned an empty array.

At the same time, it will return a 500 error when requesting the key.