I don't understand that error

[noweaver]

On my mac, I was executing the following as;

$ bundle exec jekyll server
Configuration file: /Volumes/Workspace/github/blkchain/_config.yml
Source: /Volumes/Workspace/github/blkchain
Destination: /Volumes/Workspace/github/blkchain/_site
Incremental build: disabled. Enable with --incremental
Generating...
GitHub Metadata: No GitHub API authentication could be found. Some fields may be missing or have incorrect data.
Liquid Exception: Permission denied - /usr/local/git in /_layouts/post.html
jekyll 3.5.2 | Error: Permission denied - /usr/local/git