./node_modules/styled-components/dist/styled-components.browser.esm.js Module not found: Can't resolve '@emotion/is-prop-valid' in 'C:\Web Project\Mark 13\webpageloader\frontend\node_modules\styled-components\dist' code example

Example: reactjs Module not found: Can't resolve 'styled-components

npm install styled-components --save
this should fix your problem