gRPC call failed

[cifer-ai]

We are doing relayer, using 'hermes create channel' command and get this error:

ERROR ThreadId(01) [ciferb -> cifer:07-tendermint-0] failed CreateClient: error raised while creating client for chain ciferb: failed when building client state: gRPC call failed with status: status: Unknown, message: "transport error", details: [], metadata: MetadataMap { headers: {} }

---

Our config:

First try:
rpc_addr = 'https://cif_node.cifer.ai/'
grpc_addr = 'http://34.128.114.243:26657/'

Second try:
rpc_addr = 'http://0.0.0.0:26657/'
grpc_addr = 'http://0.0.0.0:9090/'

---

Please let us know how should we solve this error.