fixed error message when bitcoind is down
fixed error message when bitcoind is down

martindale/bitcore,pnagurny/bitcore-node,maraoz/bitcore-node,martindale/bitcore,bitpay/bitcore,bitjson/bitcore,bitjson/bitcore,martindale/bitcore,bitpay/bitcore,bitjson/bitcore,bitjson/bitcore,netanelkl/bitcore-node,bitpay/bitcore,dashevo/insight-api-dash,martindale/bitcore,bitpay/bitcore