multi buildpack - 无法构建java和节点

Question

遵循此https://docs.cloud.gov/apps/multi-buildpack-deploys/教程，

我正在尝试构建java和node buildpacks，而我的build pack包含以下URL

https://github.com/cloudfoundry/java-buildpack

https://github.com/cloudfoundry/nodejs-buildpack

暂存失败：Buildpack编译步骤失败，如何修复此错误？