Hyperledger Playground教程面临的问题

我首先使用以下链接安装了超级账本: https://hyperledger.github.io/composer/latest/installing/development-tools.html

I first installed the hyperledger using this link: https://hyperledger.github.io/composer/latest/installing/development-tools.html

在安装作曲家期间...似乎它已安装v0.19.x.

During the composer install... seems it installed v0.19.x.

所以当我运行命令./createPeerAdminCard.sh ...时出现错误:

So when i ran the command ./createPeerAdminCard.sh ... i got an error:

此级别的结构不支持v0.19.x.请使用版本0.16" ...

"v0.19.x is not supported for this level of fabric. Please use version 0.16"...

我检查了脚本fabric-scripts/hlfv1/createPeerAdminCard.sh，它确实说该版本应为0.16.x.

I checked the script fabric-scripts/hlfv1/createPeerAdminCard.sh and it indeed says that the version should be 0.16.x.. Sample snippet from the script which does the version check:

>>
AWKRET=$(echo $COMPOSER_VERSION | awk -F. '{if ($2<15 || $2>16) print "1"; else print "0";}')
    if [ $AWKRET -eq 1 ]; then
        echo $COMPOSER_VERSION is not supported for this level of fabric. **Please use version 0.16**
        exit 1
>>

然后我去卸载了v0.19.x并安装了composer-cli@0.16.6 ...对上面安装链接中提到的所有模块进行了此操作.

So then i went and uninstalled v0.19.x and installed composer-cli@0.16.6... did this for all the modules mentioned in the install link above.

在此之后，我能够成功获取我的结构环境设置.

After this i was able to successfully get my fabric environment setup.

现在我正在使用此链接中的游乐场教程来创建业务网络.

Now am using the playground tutorial in this link to create business network.

https://hyperledger.github.io/composer/latest /tutorials/playground-tutorial.html

使用此链接，我可以创建.cto文件，而不会出现任何问题.

Using this link i am able to create the .cto file without any issues.

但是当我使用以下内容创建脚本文件即scrip.js时，会出现错误.

But when i create the script file i.e scrip.js with below content i get an error.

/**
 * Track the trade of a commodity from one trader to another
 * @param {org.example.mynetwork.Trade} trade - the trade to be processed
 * @transaction
 */
function tradeCommodity(trade) {
    trade.commodity.owner = trade.newOwner;
    let assetRegistry = await getAssetRegistry('org.example.mynetwork.Commodity');
    await assetRegistry.update(trade.commodity);
}

发现错误！ SyntaxError:无法解析null:意外令牌(6:6)

Error found! SyntaxError: Failed to parse null: Unexpected token (6:6)

当我用Google搜索该问题时..我在以下链接中看到了同一问题的报告: 意外的令牌(6:6) ...

When i googled for this issue.. i see this same issue reported in below link: Unexpected token (6:6) ...

所以现在上面链接中提到的此问题的解决方法是:v0.16.x不支持async和ES6关键字...并升级到0.17.x及更高版本...

So now the fix to this issue mentioned in above link is that.. the v0.16.x does not support async and ES6 keywords... and upgrade to 0.17.x and higher...

所以现在卡住了..因为如果我将作曲家升级到v0.17x，则上述createPeerAdminCard.sh将会失败...而如果我坚持使用0.16.x，那么我会遇到上述脚本解析问题.

So now am stuck.. since if i upgrade the composer to v0.17x the above createPeerAdminCard.sh will fail... and if i stick with 0.16.x then i get the above script parsing issue.

能否请您帮忙或指导我解决此问题的方法?

Can you please help or guide me out on what should be the fix for this issue?