Older js version causes issue

[MainzerKaiser]

Thankfully you provided a link to a sandbox with the older js-code. (https://codesandbox.io/s/react-material-ui-step-form-forked-578lz) I had trouble implemented the new typescript in my jsx project.

However the js version was a a bit older and for some reason the parameter color="default" in the back buttons of the SecondStep.js and Confirm.js is causing an weird error message: "the above error occurred in the component" without stating any above error. Commenting this line out made it work in react 18.