Cannot read properties of undefined (reading 'props')

[NeonWizard]

Can't get this to work with React v18. Page just spits this:

ERROR
Cannot read properties of undefined (reading 'props')
TypeError: Cannot read properties of undefined (reading 'props')
    at e.value (http://localhost:3000/static/js/bundle.js:17275:37)
    at finishClassComponent (http://localhost:3000/static/js/bundle.js:36183:35)
    at updateClassComponent (http://localhost:3000/static/js/bundle.js:36140:28)
    at beginWork (http://localhost:3000/static/js/bundle.js:37766:20)
    at HTMLUnknownElement.callCallback (http://localhost:3000/static/js/bundle.js:22757:18)
    at Object.invokeGuardedCallbackDev (http://localhost:3000/static/js/bundle.js:22801:20)
    at invokeGuardedCallback (http://localhost:3000/static/js/bundle.js:22858:35)
    at beginWork$1 (http://localhost:3000/static/js/bundle.js:42732:11)
    at performUnitOfWork (http://localhost:3000/static/js/bundle.js:41979:16)
    at workLoopSync (http://localhost:3000/static/js/bundle.js:41902:9)