Can you confirm that you installed VERSION SP-R.87.1 from latest MarketPlace link and meet the required development environment?
Can you confirm that you set your package.json file to reference the following: “react-scripts”: “4.0.3”?
Can you provide the full install output? From the output we should see something like > npm WARN audit Updating react-scripts to 5.0.0If this is being set to a later version ). The 5.0.0 version does not yet work with React Starter Pack…mostly due to the semantic-ui dependencies. We will be upgrading to this version of react-scripts in a future release. For now you should set your package.json file to reference the following: “react-scripts”: “4.0.3”,
(" DO NOT use npm audit fix --force to try to fix vulnerabilities enumerated during a npm install. This has been known to frequently make a breaking change by lowering the version ofreact-scripts within package.json.")
Did you already see the below posts to help you with the install?
@SomitC37 Happy to hear issue is resolved. In general you should do an npm install as part of setup for a newly retrieved starter pack. I looked at the package-lock.json file included with SP-R.87.1 and see it properly referencing react-scripts 5.0.0 (so key step was likely just running npm install)