Hi JIG,
Thank you for the provided project. Based on what I can see in the repository, the configuration of the Webpack is different from the one we recommend in this Installing with NPM article. Also, there are some missing packages in the package.json if I compare the definition form the repository with the packages listed in the provided link.
Please follow the instructions from the above link and let me know if the issue with the NPM usage continues to exist.
Regards,
Petar
Progress Telerik
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