Checklist

• I am using the current master branch or the latest release. Please indicate.
• I am running on an up-to-date pypsa-eur environment. Update via conda env update -f envs/environment.yaml.

Describe the Bug

I tried to run the test model:
snakemake -call results/test-elec/networks/elec_s_6_ec_lcopt_Co2L-24H.nc --configfile config/test/config.electricity.yaml

Error Message

I few days earlier I was able to fully run this example. Now, I got the following error message:

Config file config/config.yaml is extended by additional config specified via the command line.
AssertionError in file /home/user/pypsa-eur-master/rules/retrieve.smk, line 262:
The file does not exist.
  File "/home/user/pypsa-eur-master/Snakefile", line 51, in <module>
  File "/home/user/pypsa-eur-master/rules/retrieve.smk", line 262, in <module>

I checked line 262 in retrieve.smk and observed it was requesting this link:
https://d1gam3xoknrgr2.cloudfront.net/current/WDPA_Dec2023_Public.zip

It turns out this link is no longer available, which explains the AssertionError .