chart bound nothing from the {n} row(s) the grid is showing, so it shows its empty state. The binding named no series to draw: check that the spec names the columns this chart needs - a flow type needs source and target, a measure needs a column with values in it.

Warnings reference › chart:*:empty

Identifier

chart:*:empty

Raised by

Charts

Since

1.70.0

What happened

The grid has rows and the binding produced nothing from them, so the chart shows its empty state over data that is plainly there. The other empty case - a grid with no rows at all - is deliberately *not* reported: the viewer can see it, there is nothing for an integrator to do, and a dashboard that starts empty must not print a line per chart on its way to drawing.

The fix

Check that the spec names the columns this chart type needs. A flow type needs source and target; a measure needs a column that actually holds values.

Reference

Covered in full at the API reference.