ANTLR4 Python failed to install and cannot establish a connection

Hello I am trying to install the requirements of apache age python driver Whenever it comes to the installing of antlr4-python3-runtime it get struggling here: I install the packages through:

pip3 install -r requirements.txt

And it gets the following

Collecting antlr4-python3-runtime==4.11.1
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce27dfd90>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce27df2e0>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce27dee90>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce27def50>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce27df0d0>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz
ERROR: Could not install packages due to an OSError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Max retries exceeded with url: /packages/e0/64/c548678120cccf784f555972ed37cedcf4f026abeec30ab0340c3af4ea07/antlr4-python3-runtime-4.11.1.tar.gz (Caused by NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8ce2818190>: Failed to establish a new connection: [Errno 101] Network is unreachable'))

• OS: Ubunutu 22.04
• Python version: 3.10.6

To reproduce:

# update and install
sudo apt-get update
sudo apt-get install python3-dev libpq-dev
# get apache age
git clone https://github.com/apache/age
# move to the drivers
cd age/drivers/python
# create virtual environment 
virtualenv venv
# active
source venv/bin/activate
# install
pip3 install -r requirements.txt

P.S When I have tried to download the package files from https://pypi.org/project/antlr4-python3-runtime/#files it has been downloaded

Has anyone got a similar issue?