Well, simple_rss is removed from core (I believe yesterday).
Plugin autobot no longer builds.
Is someone interested in picking up the plugin and modify it to work again now that it gets unsupported all of a sudden. Well, not very suddenly, as we had, what, weeks of warning. But IMHO it is still bad form to terminate an official plugin suddenly and render it not working without caring for a smooth transition.
How can we trust other official plugins now?
autobot was never official; only plugins under https://github.com/discourse/ are official.
Note path
https://github.com/vinkashq/discourse-autobot
It should not be difficult to fix, though, if anyone from the community wants to adopt it.
I standard corrected. 
I know it should be easy to fix for somebody with Ruby knowledge, but I don’t know how to add the simple_rss gem back on the plugin.
Perhaps some other Ruby gurus can shed a light here?
I can pick this up, my Ruby/Rails skills is practically non-existent.
Check out this post / topic; should be a simple fix I believe:
I’ll be waiting for someone to fix 
Toujours en attente… en attente…
Je suis sûr qu’un post Marketplace ferait tourner les rouages…
Je peux jeter un coup d’œil à cela dès que j’aurai un moment. Ce ne sera pas ce week-end, mais peut-être à un moment la semaine prochaine.
Comme tu le dis, cela ressemble à une correction simple.
« Quand j’aurai un moment » ? 
Je n’utilise pas moi-même ce plugin, donc je m’en occuperai quand j’aurai un peu de temps libre. Ce sera peu probable dans les deux prochaines semaines, car j’ai déjà des engagements.
Si vous avez besoin que cela soit fait avant, je vous suggère de poster dans Marketplace
C’est un « bonus » mais pas essentiel. Je pense que nous pouvons attendre…