An error occurred in hot-update.js of Grommet Starter

Question

I was working on the Grommet getting started example and encountered this error when adding the tag:

defaultValidatorFn is not a function
TypeError: defaultValidatorFn is not a function
    at shouldForwardProp (http://localhost:3000/main.c6cdacb143c3e873b1fb.hot-update.js:4491:12)
    at http://localhost:3000/main.c6cdacb143c3e873b1fb.hot-update.js:11014:142
    at D (http://localhost:3000/main.c6cdacb143c3e873b1fb.hot-update.js:11023:6)
    at renderWithHooks (http://localhost:3000/static/js/bundle.js:31049:22)
    at updateForwardRef (http://localhost:3000/static/js/bundle.js:33620:24)
    at beginWork (http://localhost:3000/static/js/bundle.js:35667:20)
    at HTMLUnknownElement.callCallback (http://localhost:3000/static/js/bundle.js:20641:18)
    at Object.invokeGuardedCallbackDev (http://localhost:3000/static/js/bundle.js:20685:20)
    at invokeGuardedCallback (http://localhost:3000/static/js/bundle.js:20742:35)
    at beginWork$1 (http://localhost:3000/static/js/bundle.js:40616:11)

Upon further inspection, the console displays a series of warnings, as shown below:

styled-components: it looks like an unknown prop "full" is being sent through to the DOM, which will likely trigger a React console error

;

I triedyarn add @emotion/is-prop-validbut it made no difference. What am I doing wrong here?

Answer 1

One of the steps is to add styled-components to the dependencies. The latest major version is 6, but Grommet is currently only compatible with 5. I changed the version in package.json to ^5.3.11 and the problem was solved.