Welcome to the forum! 
Being Arch-based and thus a rolling-release distribution, Manjaro must always be kept up to date. The issues you’re describing already date back to several Stable Updates ago, and as @Ben and @banjo said, were already addressed in the Stable Updates announcement threads, as well as in countless other threads on the forum, from other people who also didn’t read the Stable Updates announcement threads.
Furthermore, not only have you missed several updates — which could potentially lead to problems, such as when trying to install additional software (and especially so from the AUR) — but you also have not been maintaining your system, judging by… 
The community repo no longer exists. It was merged into the extra repo about 6 months ago. The fact that you still have it in your /etc/pacman.conf clearly points in the direction of not having merged your .pacnew files.
You can check how many of them you have on your system with…
pacdiff -o
This then leads me to posit the question whether Manjaro would be the right distribution for you, and to direct you toward this short but explanatory essay below. Please read it, because from the looks of it, you would be better off with a point-release distribution than with a rolling-release distribution such as Manjaro.