SplitPane, sashRender prop required?

[Yoorana]

Hey first time starting my own project, I started using SplitPane for a simple vertical pane from the storybook reference only sizes and onChange seems to be used as props This example here

As prop seems sashRender is also required, why is that? Could I get some help on this?

This is what I have written

      <SplitPane
        sizes={sizes}
        onChange={setSizes}
      >
        <Pane
          className="emptyInvoiceView"
          style={{ background: "grey", height: "100%" }}
          minSize="10%"
        >
          <CreateEmptyInvoiceView />
        </Pane>
      </SplitPane>

Error message is

Property 'sashRender' is missing in type '{ children: Element[]; sizes: (string | number)[]; onChange: Dispatch<SetStateAction<(string | number)[]>>; }' but required in type 'ISplitProps'.ts(2741)