Displaying error when building the app in Next.js

Question

When I run npm run build for a Next.js (React & Ts) I get the following error:

Error: Missing "key" prop for element in array react/jsx-key

This error points to the following code:

<GridActionsCellItem
  icon={<SaveIcon />}
  label="Save"
  sx={{
    color: "primary.main",
  }}
  onClick={handleSaveClick(id)}
/>

Ahmet Emre Kilinc · Accepted Answer · 2024-06-21 07:13:33Z

1

Add key property to component. Something like this:

    <GridActionsCellItem
      key={id}
      icon={<SaveIcon />}
      label="Save"
      sx={{
        color: "primary.main",
      }}
      onClick={handleSaveClick(id)}
    />

you can get more info here: https://react.dev/learn/rendering-lists#keeping-list-items-in-order-with-key

edited Jun 21, 2024 at 7:13

Ahmet Emre Kilinc

7,05119 gold badges37 silver badges49 bronze badges

answered Jun 20, 2024 at 6:56

Андрей Сельдюков

263 bronze badges

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