Galachain testnet is registered, deployed and also showing in the list https://gateway-testnet.galachain.com/docs-json

[melodic456]

but showing error below:
Failed to load API definition.
Fetch error
Internal Server Error

[melodic456]

"network": "TNT",
"channel": "testnet04",
"chaincode": "gc-8ef1a2b862e26b1bd109a3c1e94074a07abad966",

https://gateway-testnet.galachain.com/docs/?channel=testnet04&contract=gc-8ef1a2b862e26b1bd109a3c1e94074a07abad966-PublicKeyContract