Unknown Empire wide food malus 3 years ago

Hello,

I'm new to the game and today I suddenly got a problem... Idk how or why but a new malus appeared in every system I own on my game... Despite my efforts I couldn't be able to find the solution on internet... The malus is entitled "- X food from food to population" (see the image in the link , sorry the uploads were failing..)

http://image.noelshack.com/fichiers/2021/47/1/1637604326-food.png

I guess it's a dummy question but now all of my population just run away and that's bad when you're in a middle of a war :D, so where it come from and how can I get rid of it please?

Thanks for your help!

How trade routes affect food & industry? 6 years ago

It seems there is bonus from trade routes to food & industry production of system. My questions are

1. Which factors affect the amount of food & industry granted by trade routes? (eg. trade value of system/level of trade company etc.)
2. Does having multiple trade routes passing through the system multiply the food/industry bonuses?
3. Do trade routes passing my system but invisible to me (because I do not own that trade route) grant food/industry bonuses?