Certificate error downloading from gstreamer.freedesktop.org on Ubuntu 18.04

Submitted by David Ing

Description

I am using Cerbero with the command ./cerbero-uninstalled package gstreamer-1.0

I get an error:

[(65/80) spandsp -> fetch ]
-----> Fetching tarball http://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz to /home/ding/github/gstreamer/cerbero/build/sources/local/spandsp-0.0.6/spandsp-0.0.6.tar.gz
Downloading http://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz
Running command 'wget http://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz -O /home/ding/github/gstreamer/cerbero/build/sources/local/spandsp-0.0.6/spandsp-0.0.6.tar.gz '
--2018-09-04 15:46:28-- http://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz
Resolving www.soft-switch.org (www.soft-switch.org)... 209.105.235.30
Connecting to www.soft-switch.org (www.soft-switch.org)|209.105.235.30|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz [following]
--2018-09-04 15:46:28-- https://www.soft-switch.org/downloads/spandsp/spandsp-0.0.6.tar.gz
Connecting to www.soft-switch.org (www.soft-switch.org)|209.105.235.30|:443... connected.
ERROR: cannot verify www.soft-switch.org's certificate, issued by ‘CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US’:
Unable to locally verify the issuer's authority.
To connect to www.soft-switch.org insecurely, use --no-check-certificate'. Downloading https://gstreamer.freedesktop.org/src/mirror/spandsp-0.0.6.tar.gz Running command 'wget https://gstreamer.freedesktop.org/src/mirror/spandsp-0.0.6.tar.gz -O /home/ding/github/gstreamer/cerbero/build/sources/local/spandsp-0.0.6/spandsp-0.0.6.tar.gz ' --2018-09-04 15:46:29-- https://gstreamer.freedesktop.org/src/mirror/spandsp-0.0.6.tar.gz Resolving gstreamer.freedesktop.org (gstreamer.freedesktop.org)... 131.252.210.176, 2610:10:20:722:a800:ff:feda:470f Connecting to gstreamer.freedesktop.org (gstreamer.freedesktop.org)|131.252.210.176|:443... connected. ERROR: cannot verify gstreamer.freedesktop.org's certificate, issued by ‘CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US’: Unable to locally verify the issuer's authority. To connect to gstreamer.freedesktop.org insecurely, use --no-check-certificate'.

Recipe 'spandsp' failed at the build step 'fetch'
Select an action to proceed:
[0] Enter the shell
[1] Rebuild the recipe from scratch
[2] Rebuild starting from the failed step
[3] Skip recipe
[4] Abort

Version: 1.14.x

Edited Mar 13, 2019 by Nirbheek Chauhan