The one I tested on my local latest(as of today) AEMaaCS SDK is "React - WKND SPA 1.0.3"[1]. You may fetch it as follows :
$ git clone git@github.com:adobe/aem-guides-wknd-spa.git
$ cd aem-guides-wknd-spa
$ git checkout React/latest
$ mvn clean install -PautoInstallSinglePackage
If we follow along with the tutorials on https://experienceleague.adobe.com/docs/experience-manager-learn/getting-started-with-aem-headless/s... one may likely make a mistake. Don't hesitate to validate and check out the final latest working solution[1]. For deprecated packages/vulnerabilities, fix them with npm audit[2]. In case of any issues, feel free to log a ticket.
[1] https://github.com/adobe/aem-guides-wknd-spa/releases
[2] https://docs.npmjs.com/auditing-package-dependencies-for-security-vulnerabilities