HarmonyOS Huks isKeyItemExist 报错

let properties: Array<huks.HuksParam> = new Array() 
properties[0] = { 
  tag: huks.HuksTag.HUKS_TAG_ALGORITHM, 
  value: huks.HuksKeyAlg.HUKS_ALG_RSA 
} 
let options: huks.HuksOptions = { 
  properties: properties, 
  inData: new Uint8Array() 
} 
try { 
  isKeyExist = await huks.isKeyItemExist(HuksUtil.alias_2048, options) 
} catch (e) { 
  console.error(e) 
}