No rows displayed and bugs

[OlagStegan]

Newish to svelte but learning fast

I get the following warnings that seem to prevent rows displaying (cols display just great)

(!) Plugin svelte: Src has unused export property '__affixedRowIndices'. If it is for external reference only, please consider using `export const __affixedRowIndices`
node_modules\svelte-data-grid\src\index.svelte
140:   export let __columnHeaderResizeCaptureWidth = 20; // The width of the area on column borders that can be clicked to resize the column
141:   /**** Do not modify any of the data variables below ****/
142:   export let __affixedRowIndices = []; // DO NOT MODIFY DIRECTLY. The row indices to affix to the top of the grid
                  ^
143:   export let __affixedColumnIndices = []; // DO NOT MODIFY DIRECTLY. The column indices to affix to the left side of the grid
144:   export let __affixingRow = false; // DO NOT MODIFY DIRECTLY. Whether a row affix operation 
is in progress
(!) Plugin svelte: Src has unused export property '__columnAffixLineLeft'. If it is for external reference only, please consider using `export const __columnAffixLineLeft`
node_modules\svelte-data-grid\src\index.svelte
146:   export let __rowActionLineTop = 0; // DO NOT MODIFY DIRECTLY. The 'top' position of the row action line
147:   export let __rowAffixLineTop = 0; // DO NOT MODIFY DIRECTLY. The 'top' position of the row 
affix line
148:   export let __columnAffixLineLeft = 0; // DO NOT MODIFY DIRECTLY. The 'left' position of the column affix line
                  ^
149:   export let __columnDragging = false; // DO NOT MODIFY DIRECTLY. Whether a column is being dragged
150:   export let __columnIndexBeingDragged = null; // DO NOT MODIFY DIRECTLY. The column index that is being dragged

svelte 3.31.2
node 15.3.0

I would rather not go tinkering and mess up this great rep