[NEAR DA] Error when submit blob: "NEAR DA client handler error: [Timeout]" on mainnet

Near Community and nodes
1

Hello, I use git …/rollup-data-availability/tree/main/gopkg/da-rpc for mainnet.
to submit data. But it often return status 400. Detail error from config.Submit function:
NEAR DA client handler error: [Timeout].
even though they created tx on the chain.
you can see some tx here address: 507cf5df56c8d98e6f5983599da44a1beacbd60f974336ed68b669769c164d44

Can you help me to fix this? I don’t know how/where to fix it in go lang code, bash code, or rust code…
Please help/
My code:

...
import near "github.com/near/rollup-data-availability/gopkg/da-rpc"
....
config, err := near.NewConfig(DA_ACCOUNT, DA_CONTRACT, DA_KEY, 1)
	if err != nil {
		fmt.Println("NewConfig err:", err)
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	var candidateHex string = "0xfF00000000000000000000000000000000000000"

	dataBase64 := "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"

	dataBase64 := data.Data
	decodedBytes, err := base64.StdEncoding.DecodeString(dataBase64)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	result, err := config.Submit(candidateHex, []byte(decodedBytes))

	if err != nil {
		fmt.Println("submit err:", err)
		return
	}
2

up! please help me!
up! please help me!