Zonal stats of reduced image

[JiehaoZhang1993]

I also encountered this issue when reducing a ImageCollection:

test = ee.ImageCollection("MODIS/061/MOD17A3HGF").select('Gpp').sum()
# zonal statistics
geemap.zonal_statistics(
    test,
    geemap.gdf_to_ee(ws),
    outdir,
    statistics_type='MEAN'
)

I did not find the "mean" column in the output CSV file.
I found that the image ‘’test‘’ is like:

I am not sure what the problem is.

Originally posted by @JiehaoZhang1993 in #598 (comment)

[giswqs]

Set out_file_path and scale
https://geemap.org/common/#geemap.common.zonal_stats