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Warning: Each child in a list should have a unique "key" prop. when using datatable

Hi guys, I got this warning in the chrome inspector when update datatable [ Warning: Each child in a list should have a unique “key” prop. ], does anyone know how to fix this? Thanks much.

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I’m running into the same issue and also looking for a solution. I attempted to resolve this by setting an ‘id’ column, but that doesn’t appear to have resolved the ‘key’ prop issue with React.

Same here. Code seems to run ok, but warning about performance toll is worrysome a bit for sizable projects.
I couldn’t find an explanation for non web developers.

please help us, i dont understand:

also: https://github.com/plotly/dash/issues/1433