Why I got this error when calling NewClientWithDefaultMainnet

[thachletopebox]

networks := map[string]*liteapi.Client{}
var err error
networks["-239"], err = liteapi.NewClientWithDefaultMainnet()
if err != nil {
t.logger.Errorf("Error creating TON mainnet client: %v", err)
}

the error response "Error creating TON mainnet client: invalid character '\u003c' looking for beginning of value","time":"2024-12-11T17:21:34+07:00"

[mn13]

+1 it's happened today

Update:
It happens in downloadConfig in calling GET on https://ton.org/global.config.json for some reason it returns 403 sometimes (suspiciously often when initializing client).

Possiblе solution may be using FromEnvsOrMainnet to set liteservers in env