Not downloading Aerosol product(MOD04_3K, MOD04_L2)

[gajananQuantela]

I'm trying to download MODIS aerosol product using download.py, but it's not downloading anything. It's giving connection error.

modis_download.py -U username -P password -r -p MOD04_L2.006 -f 2017-12-31 -O .

When I use this command I'm getting this error.

Here are the details of the files containing the text file:

I tried to download the snow product as well but it's not downloading anything.
modis_download.py -I -u ftp://n4ftl01u.ecs.nasa.gov -p [email protected] -s SAN/MOST -p MOD10A1.005

It's working fine in case of downloading the NDVI data, I used this command:
modis_download.py -U user -P passwd -r -p MOD13Q1.005 -f 2010-12-31 -O

I tried the same command for the Aerosol product, but it's not downloading the Aerosol product.