text: exports.errorReason =  {
      100: 'Required parameters can not be empty',
      101: 'Illegal parameter',
      102: 'coin does not exist',
      103: 'Key does not exist',
      104: 'Signature does not match',
      105: 'Insufficient permissions',
      106: 'Request expired(nonce error)',
      200: 'Lack of balance',
      201: 'Too small for the number of trading',
      202: 'Price must be in 0 - 1000000',
      203: 'Order does not exist',
      401: 'System error',
      402: 'Requests too frequently',
      403: 'Non-open API',
      404: 'IP restriction does not request the resource',
  };
  