Shopware 6.5.3.3调用watch-administration时缺失functions.sh问题求助

将店铺从6.4版本升级至6.5.3.3版本，采用Symfony Flex模板。在Flex体系中，原开发/生产模板的脚本已拆分至食谱（recipes）中。调用watch administration时出现如下报错：

$ bin/watch-administration.sh 
bin/watch-administration.sh: line 9: bin/functions.sh: No such file or directory
bin/watch-administration.sh: line 13: load_dotenv: command not found

当前环境 #

项目未安装shopware/platform（此为正常情况），已安装的Shopware组件版本如下：

"shopware/administration": "6.5.3.3",
        "shopware/core": "6.5.3.3",
        "shopware/elasticsearch": "6.5.3.3",
        "shopware/storefront": "6.5.3.3",

尝试操作及问题 #

找到functions.sh属于shopware/platform的6.4版本食谱，但尝试执行以下命令安装该食谱失败：

$ composer recipes:install shopware/platform
Run command with -v to see more details

Cannot update: some packages are not installed: shopware/platform

疑问 #

• 应如何添加functions.sh文件？
• 这是Flex食谱的bug还是操作有误？

内容的提问来源于stack exchange，提问作者Alex