The preview is blank

The preview is blank

The Selected preview or Output preview shows no texture.

Most likely cause

The preview has no valid source. A missing connection or the wrong preview target commonly causes this symptom.

Fix the Output preview

1. Find Graph Output in the graph.
2. Check its input for a connection.
3. Connect an image-producing node to the input.
4. Select that output in the Output preview.

The connected texture should appear.

Fix the Selected preview

1. Select an image-producing node.
2. Open the Selected preview.

If the preview stays blank, reload the graph and repeat the check. Preserve the graph package before reporting a repeatable rendering failure.

See Connect nodes for the connection procedure.