De repente ao iniciar o ambiente de desenvolvimento no navegador os componentes pararam de renderizar, dizendo que 'render' não está definido. Verifiquei em todos os class components e todos eles possuem o render().
react-dom.development.js:86 Warning: Component(...): No render method found on the returned component instance: you may have forgotten to define render. at Component (http://localhost:3000/static/js/bundle.js:39998:18) at Relogio at div at div at Cronometro at div at App (http://localhost:3000/static/js/bundle.js:722:80)
Outro erro também:
Uncaught TypeError: instance.render is not a function at finishClassComponent (react-dom.development.js:19752:1) at updateClassComponent (react-dom.development.js:19698:1) at beginWork (react-dom.development.js:21611:1) at HTMLUnknownElement.callCallback (react-dom.development.js:4164:1) at Object.invokeGuardedCallbackDev (react-dom.development.js:4213:1) at invokeGuardedCallback (react-dom.development.js:4277:1) at beginWork$1 (react-dom.development.js:27451:1) at performUnitOfWork (react-dom.development.js:26557:1) at workLoopSync (react-dom.development.js:26466:1) at renderRootSync (react-dom.development.js:26434:1)
Agradeço desde já. :)