All the credits belong to https://github.com/jbeuckm who developed this wonderful plugin: https://github.com/jbeuckm/strapi-plugin-import-content
The current plugin only introduced some new UI changes on the original plugin.
Based on strapi-beta: 17.5
yarn install
yarn run develop --watch-admin
or
npx strapi develop --watch-admin
Allow Public Access on all the endpoints of this plugin.
Allow Public Access on getmodels endpoint of the Content Type Builder plugin.