Problem of setup v2x

[AyaseErii]

Hello, I am new to this v2x. I just followed the documentation to set up the v2x but I could not get the v2x installed at all by running either

pip install git+https://github.com/chipsalliance/f4pga-v2x.git#egg=f4pga-v2x
or
pip3 install git+https://github.com/chipsalliance/f4pga-v2x.git#egg=f4pga-v2x

After running either of the above command, I will get this errors:

    Defaulting to user installation because normal site-packages is not writeable Collecting f4pga-v2x
    Cloning https://github.com/chipsalliance/f4pga-v2x.git to /tmp/pip-install-51hdcdkb/f4pga- 
    v2x_338fd02ca2564184a962ad96582f9322
    Running command git clone --filter=blob:none -q https://github.com/chipsalliance/f4pga-v2x.git /tmp/pip-install- 
    51hdcdkb/f4pga-v2x_338fd02ca2564184a962ad96582f9322
    fatal: unable to access 'https://github.com/chipsalliance/f4pga-v2x.git/': Could not resolve host: github.com
    WARNING: Discarding git+https://github.com/chipsalliance/f4pga-v2x.git#egg=f4pga-v2x. Command errored out with exit 
    status 128: git clone --filter=blob:none -q https://github.com/chipsalliance/f4pga-v2x.git /tmp/pip-install-51hdcdkb/f4pga- 
    v2x_338fd02ca2564184a962ad96582f9322 Check the logs for full command output.
    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 0x7f1bc0419760>: Failed to establish a new 
    connection: [Errno -3] Temporary failure in name resolution')': /simple/f4pga-v2x/
    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 0x7f1bc0419970>: Failed to establish a new 
    connection: [Errno -3] Temporary failure in name resolution')': /simple/f4pga-v2x/
    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 0x7f1bc0419b20>: Failed to establish a new 
    connection: [Errno -3] Temporary failure in name resolution')': /simple/f4pga-v2x/
    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 0x7f1bc0419cd0>: Failed to establish a new 
    connection: [Errno -3] Temporary failure in name resolution')': /simple/f4pga-v2x/
    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 0x7f1bc0419e80>: Failed to establish a new 
    connection: [Errno -3] Temporary failure in name resolution')': /simple/f4pga-v2x/
    ERROR: Could not find a version that satisfies the requirement f4pga-v2x (unavailable) (from versions: none)
    ERROR: No matching distribution found for f4pga-v2x (unavailable)`

Actually, I also tried to used cd f4pga-v2x and then pip install . or pip3 install . This did not work either...

• OS
  Ubuntu 20.14

Could anyone who got those worked point me to the right direction to set up this v2x tool? I will appreciate it!

Thanks in advance!