Cannot read property 'getGridCell' of null

[jiangyh1024]

I'm submitting a ... (check one with "x")

[] bug report => see 'Providing a Reproducible Scenario'
[] feature request => do not use Github for feature requests, see 'Customers of ag-Grid'
[] support request => see 'Requesting Community Support'

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Providing a Reproducible Scenario
Accepted reproducible scenarios are

• A description of the detailed steps to reproduce your behaviour in one of our examples in the docs.
• A plunker

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Current behaviour.
Expected behaviour. If possible back this up with our docs/examples if possible

Current behavior

client side row model - if there are many rows and the focused cell become invisible (removed from row buffer). then press up/down/left or right arrow buttons, it will throw an error 'Cannot read property 'getGridCell' of null'

Expected behavior

should fix this bug

Please tell us about your environment:

• ag-Grid version: X.X.X

20.02

• Browser:

• Language: [all | TypeScript X.X | ES6/7 | ES5]

[jiangyh1024]

and same issue if there are many columns with some pinned columns (left pinned).
focused cell is on the last pinned cell, after pressing right arrow key, it will throw an error ('Cannot read property 'getGridCell' of null') if the cell next to the last pinned cell is not visible due to column virtualisation

[makinggoodsoftware]

Hi,

Can you provide a reproducible scenario using one of our examples or your source code in a plunker and we will investigate?

Accepted reproducible scenarios are

• A description of the detailed steps to reproduce your behaviour in one of our examples in the docs.
• A plunker

If you decide to send us a plunkr, from any example in our website use the plunkr button in there to fork your own code by following the steps below:

• Select the framework that is appropriate to you from the drop-down
• Open it in plunker. (Use the button plunker in our example)
• Add your changes so that the behaviour is reproduced
• Save and Freeze the plunker(On the top left corner)
• Send us the link to the plunker(You can copy the URL from the browser)

If reporting a bug make sure to state.

Actual behaviour.
Expected behaviour. If possible back this up with our docs/examples if possible

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Note that this issue is getting closed, but you are welcomed to create a new issue if you can provide us with a reproducible scenario

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