score:5
Accepted answer
Suspense and lazy are reachable in the following versions :
"react": "^16.6.3"
"react-dom": "^16.6.3"
This error relates to the react-dom which was not upgraded correctly!
score:1
Here is a very simple example that should work using similar dependencies.
I would recommend ensuring that import('./_header') resolves to the correct module, to check again that there is a default export and that it is a React component type. Additionally, make sure { fallback } for the suspense component is a component type as well.
Source: stackoverflow.com
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