Issues after updating from version 7 to 11

Install / Update
5

I managed to fix 4 database issues thanks to the following post :slight_smile:: Bench update --patch using this command following error... how to fix it - #11 by clarkej

So now the command bench update --patch works well.

Once I type the command line bench setup requirements, I get this:

/usr/local/lib/python2.7/dist-packages/requests/__init__.py:83: RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
  warnings.warn(warning, RequestsDependencyWarning)
Updating Python libraries...
INFO:bench.utils:./env/bin/pip install --upgrade pip
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
Requirement already up-to-date: pip in ./env/lib/python2.7/site-packages (19.0.2)
INFO:bench.utils:./env/bin/pip install -q -r /home/frappe/.bench/requirements.txt
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
INFO:bench.app:installing frappe
INFO:bench.utils:./env/bin/pip install -q  -e ./apps/frappe 
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7.
Command "python setup.py egg_info" failed with error code 1 in /home/frappe/frappe-bench/apps/frappe/
Traceback (most recent call last):
  File "/usr/local/bin/bench", line 11, in <module>
    load_entry_point('bench', 'console_scripts', 'bench')()
  File "/home/frappe/.bench/bench/cli.py", line 40, in cli
    bench_command()
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 1066, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python2.7/dist-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/.bench/bench/commands/setup.py", line 161, in setup_requirements
    setup_python_requirements()
  File "/home/frappe/.bench/bench/commands/setup.py", line 167, in setup_python_requirements
    update_requirements()
  File "/home/frappe/.bench/bench/utils.py", line 435, in update_requirements
    install_app(app, bench_path=bench_path)
  File "/home/frappe/.bench/bench/app.py", line 171, in install_app
    find_links=find_links))
  File "/home/frappe/.bench/bench/utils.py", line 159, in exec_cmd
    raise CommandFailedError(cmd)
bench.utils.CommandFailedError: ./env/bin/pip install -q  -e ./apps/frappe

Do you have any idea on how I resolve this issue?
Thanks!