React-data-grid: TypeError: Cannot read property 'length' of undefined

[cleandevcode]

Now I am using the latest version of react-data-grid.
Then I see this error.
This is my package.json.

{
...
"react-data-grid": "^7.0.0-canary.22",
"react": "^16.13.1",
"react-dom": "^16.13.1",
...
}

Please help me.
Thanks.

[cleandevcode]

I downgraded the version of react-data-grid to "react-data-grid": "^6.1.0", and working well without error.
Seems like there is a problem with the new version.
So now I am closing this issue here.

[olliiiver]

I had the same issue I've figured out that the new version just works fine. However, old examples or old properties do not work anymore. Also old type packages like @types/react-data-grid need to be removed.