The community member believes that Llama Index depends on tree-sitter-languages and that Tree Sitter does not have a build for Mac. Another community member confirms that this is not an issue on Mac, but they were experiencing the issue with Docker. They ended up removing it from the requirements. Another community member suggests that they should make a pull request to address this issue. It is then discovered that tree-sitter is not actually in the requirements, and the latest version of Llama Index should have this issue resolved. The community members confirm that the latest version (v0.8.39.post2) fixes the issue.
