This is the error I get every time I try installing calculator lens
yash@yash-desktop:~$ sudo add-apt-repository ppa:scopes-packagers/ppa [sudo] password for yash: Sorry, try again. [sudo] password for yash: Traceback (most recent call last): File "/usr/bin/add-apt-repository", line 128, in <module> ppa_info = get_ppa_info_from_lp(user, ppa_name) File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 84, in get_ppa_info_from_lp curl.perform() pycurl.error: (35, 'gnutls_handshake() failed: A TLS packet with unexpected length was received.') yash@yash-desktop:~$
How to resolve this?