Steem Load Balancer: Investigation of Invalid Request

I've come across this bug - which I need to spend some time debugging:

curl -s -X POST --data '{"jsonrpc":"2.0", "method":"condenser_api.get_account_count", "params":[], "id":1}' https:/
/api.steemyy.com | jq
{
"jsonrpc": "2.0",
"id": null,
"error": {
"code": -32600,
"message": "Invalid Request",
"data": {
"error_id": "99d35fc4-804e-49a1-9613-98b4a9cdc0ec",
"jussi_request_id": "001102709905755570"
}
}
}

It seems it only affects some APIs. Please bear with me. Thanks

Repo: https://github.com/DoctorLai/steem-load-balancer

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