There is a fix in the SRU queue for #1302885 (it looks like this bug is a duplicate of that one). Please try adding the PPA at https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-004 to your sources and see if it fixes this problem.
There is a fix in the SRU queue for #1302885 (it looks like this bug is a duplicate of that one). Please try adding the PPA at https:/ /launchpad. net/~ci- train-ppa- service/ +archive/ ubuntu/ landing- 004 to your sources and see if it fixes this problem.