error install Ubuntu 16.04 about streisand

[D1E7BF44]

You need to change line 253 of /util/venv-dependencies.sh to our_pip_install --upgrade 'pip < 21.0'.

[h-saber]

I've solved this issue by updating Python to 3.9 and all pip versions to 21.
But I receive a nonsense error when trying ./util/venv-dependencies.sh ./venv
Here it is:

Error: Command '['/root/streisand/venv/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.

'python -m venv' failed to create directory './venv'

Note that ./venv must not exist, but its parent (.) must
exist.

The first argument, 'new-directory', must be somewhere you can write
to. A good place is './venv'. If it already exists, please delete the
directory, or use a different name.

This error happens while no venv directory exists there.

OS: Ubuntu 16.04

[h-saber]

You need to change line 253 of /util/venv-dependencies.sh to our_pip_install --upgrade 'pip < 21.0'.

I did try this before your comment, but the scripts stops on cryptography and says you should upgrade to latest pip.

[changhefirst]

Do not upgrade python to 3.9, stay 3.5, but only upgrade the pip to 19.0.1, then comment all the 'pip_install' phases. (should two places, search all the codes.)

The codes are nearly too old.