Error/Warning message, occurring up during work on a workshop (build a reusable profile bar component)

I did initially start this post in curriculum support thread but never completed and sent it. I decided due to the format of post in that forums and rethinking the nature of the query it is more appropriate here. I know I could also could have raise an issue but my thinking, feel to advise me otherwise in future, is it better to leave that till you are more sure in warrants that.

Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: %s.%s undefined  You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.
Error, open your browser console to learn more.
Error, open your browser console to learn more.

I am receive the above error/ warning message while working on this lab (https://www.freecodecamp.org/learn/front-end-development-libraries-v9/workshop-reusable-profile-card-component/step-2) not affecting progress, I am now started the fourth step and the same or similar error message has come up each time. If this is not something for me/freeCodeCamp to be concerned about let me know that is enough though feel free to explain what is going on a little more, should you want to. I happy to share but decided to avoid sharing code of completed steps without request.

On Completing Step 4 the error message has gone away. I think I might have worked what is going simplistically, it may be to do with incomplete nature of the code in previous steps. However even if I am right, I would still appreciate a response for someone more knowledgeable at very least to like this comment, however a proper response (may only need a sentence) would be better as there is probably useful explanation that can given that I do not know.