Add empty column: react.js:18782 Warning: Failed propType: Required prop `value` was not specified in `Cell`. Check the render method of `Row`.

[nina-zhang]

When i add a new column but not key ,will show error:
react.js:18782 Warning: Failed propType: Required prop value was not specified in Cell. Check the render method of Row.

[michielboekhoff]

This is quite simple: value cannot be required, as it will be null for empty cells. I'll create a PR for that.

[jstray]

I'm getting the same error (react 15). Did that PR ever happen?

[vlaquest]

Hi, same error here, react 0.15.4

[coffenbacher]

Same here, any workarounds??

[moraleslos]

Same error here. react 15.6.1 and react-data-grid 2.0.53

[jcarva]

I'm getting the same error here, using react 15.4.2 and react-data-grid 2.0.54. Looking for solutions.

[adamdonahue]

I get

The prop `value` is marked as required in `SimpleCellFormatter`, but its value is `null`

[amanmahajan7]

This is changed in #948