HarmonyOS获取签名信息获取失败

参考例子如下：

import bundleManager from '@ohos.bundle.bundleManager';
import { BusinessError } from '@ohos.base';
let bundleFlags = bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION | bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_SIGNATURE_INFO;
try {
  bundleManager.getBundleInfoForSelf(bundleFlags).then((data) => {
    hilog.info(0x0000, 'testTag', 'getBundleInfoForSelf successfully. Data: %{public}s', JSON.stringify(data));
  }).catch((err: BusinessError) => {
    hilog.error(0x0000, 'testTag', 'getBundleInfoForSelf failed. Cause: %{public}s', err.message);
  });
} catch (err) {
  let message = (err as BusinessError).message;
  hilog.error(0x0000, 'testTag', 'getBundleInfoForSelf failed: %{public}s', message);
}

注意：bundleFlags是否添加了bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_SIGNATURE_INFO。