It looks like the private key you published belongs to this public address
EOS5ueRfpHnWxbxysRpcsUkBsma7vWvZjgQYi9jU9cY7wyiSQd9Zx
which is not on the main chain, meaning there is no account associated with it.

cleos get accounts EOS5ueRfpHnWxbxysRpcsUkBsma7vWvZjgQYi9jU9cY7wyiSQd9Zx
{
  "account_names": []
}