Not able to add repository for debian install

[animesh-sharama]

Describe the feature:

Trying to install elassandra using the instruction - https://elassandra.readthedocs.io/en/latest/installation.html#deb-package

sudo add-apt-repository 'deb [arch=all] https://nexus.repo.strapdata.com/repository/apt-releases/ stretch main'

Error

Could not connect to nexus.repo.strapdata.com:443 (13.80.132.212), connection timed out
Reading package lists... Done                              
W: Failed to fetch https://nexus.repo.strapdata.com/repository/apt-releases/dists/stretch/InRelease  Could not connect to nexus.repo.strapdata.com:443 (13.80.132.212), connection timed out
W: Some index files failed to download. They have been ignored, or old ones used instead.

Plugins installed: []

JVM version (java -version):
openjdk version "1.8.0_272"
OpenJDK Runtime Environment (build 1.8.0_272-8u272-b10-0ubuntu1~18.04-b10)
OpenJDK 64-Bit Server VM (build 25.272-b10, mixed mode)

OS version (uname -a if on a Unix-like system):
Linux drogba 4.15.0-118-generic #119-Ubuntu SMP Tue Sep 8 12:30:01 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Description of the problem including expected versus actual behavior:

Steps to reproduce:

Please include a minimal but complete recreation of the problem, including
(e.g.) index creation, mappings, settings, query etc. The easier you make for
us to reproduce it, the more likely that somebody will take the time to look at it.

Please provide the following information:

• elassandra logs (logs/system.logs or /var/lib/cassandra/system.log)
• elasticsearch cluster state (curl http://localhost:9200/_cluster/state)
• cassandra schema (cqlsh>DESC KEYSPACE <your_keyspace>)
• cassandra gossip state (run: nodetool gossipinfo)

[gayatri-sa]

I am having the same issue.