I have gone through the article https://getstorybook.io/docs/basics/slow-start-guide and after doing all the necessary steps while I ran the npm run storybook command I encountered the error "Button is not defined
ReferenceError: Button is not defined
at eval (webpack:///:6:5)
at renderMain (webpack:////@kadira/storybook/dist/client/preview/render.js:85:31)
at renderPreview (webpack:////@kadira/storybook/dist/client/preview/render.js:101:10)
at Array.renderUI (webpack:////@kadira/storybook/dist/client/preview/index.js:89:26)
at Object.dispatch (webpack:////redux/lib/createStore.js:186:19)
at eval (webpack:////@kadira/storybook/dist/client/preview/index.js:68:16)
at eval (webpack:////@kadira/storybook-channel/dist/index.js:111:21)
at Array.forEach (native)
at Channel._handleEvent (webpack:////@kadira/storybook-channel/dist/index.js:110:19)
at PageBusTransport._handleEvent (webpack:////@kadira/storybook-channel-pagebus/dist/index.js:59:12)"