Remove captions from images generated programmatically

Hi, I am using the following code chunk to generate a series of images programmatically:

```{r}
#| label: insistutype-spatial-clusters-plots
#| lightbox:
#|   group: insitutype-spatial-plots
#| layout-ncol: 3

# Create the plots with the cell types for every stamp
ist_cell_types_stamps_plots <- generate_spatial_plots(
  breast_cancer_patients_analyze,
  cluster_var = col_ist_ann,
  cluster_name = NULL,
  legend_fill = "Cell types",
  color_lookup_table = palette_cell_types
)
# Display the plots
print(ist_cell_types_stamps_plots)
```

As you can see in the screenshot below, the problem is that all the images have their name as caption:

How can I remove the captions?