Tails

Tails 4.0 is unable to obtain Python packets via PIP:

amnesia@amnesia:~/Downloads$ sudo pip3 install cryptography
[sudo] password for amnesia:
Collecting cryptography
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x75e0ab898080>: Failed to establish a new connection: [Errno –3] Temporary failure in name resolution’)‘: /simple/cryptography/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by ’NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x75e0ab898470>: Failed to establish a new connection: [Errno –3] Temporary failure in name resolution’)‘: /simple/cryptography/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by ’NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x75e0ab898780>: Failed to establish a new connection: [Errno –3] Temporary failure in name resolution’)‘: /simple/cryptography/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by ’NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x75e0ab8985c0>: Failed to establish a new connection: [Errno –3] Temporary failure in name resolution’)‘: /simple/cryptography/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ’NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object at 0x75e0ab898a90>: Failed to establish a new connection: [Errno –3] Temporary failure in name resolution’)’: /simple/cryptography/
Could not find a version that satisfies the requirement cryptography (from versions: )
No matching distribution found for cryptography

The same error message is also given when the command is run without sudo.