[Evolution] Problems with evo: Error writing data to TLS socket: The specified session has been invalidated for some reason.

[Svante Signell <svante signell ownit nu>]

Hi,

Suddenly evo refuses to read mail from my email account:
Failed to open folder.
The reported error was “Error reading data from TLS socket: The
specified session has been invalidated for some reason.”.

And:
Failed to finish trust prompt for “a b gmail com”
No PEM-encoded certificate found.

ii  evolution                             3.30.5-1
ii  evolution-common                      3.30.5-1
ii  evolution-data-server                 3.30.5-1
ii  evolution-data-server-common          3.30.5-1
ii  libebackend-1.2-10:amd64              3.30.5-1
ii  libebook-1.2-19:amd64                 3.30.5-1
ii  libebook-contacts-1.2-2:amd64         3.30.5-1
ii  libecal-1.2-19:amd64                  3.30.5-1
ii  libedata-book-1.2-25:amd64            3.30.5-1 
ii  libedata-cal-1.2-29:amd64             3.30.5-1 
ii  libedataserver-1.2-23:amd64           3.30.5-1
ii  libedataserverui-1.2-2:amd64          3.30.5-1
ii  libevolution                          3.30.5-1
ii  libgnutls-dane0:amd64                 3.6.6-3
ii  libgnutls-deb0-28:amd64               3.3.17-1
ii  libgnutls-openssl27:amd64             3.6.6-3
ii  libgnutls28-dev:amd64                 3.6.6-3
ii  libgnutls30:amd64                     3.6.6-3
ii  libgnutlsxx28:amd64                   3.6.6-3