The problem, this message has been repeated in the game for several days - Vrátíme se teď ke svýmu pravidelnýmu programu: osvobozování ........., still, still, still cycling
Running it through Google Translate the message tells me that you didn't finish the first Operation Oracle mission properly.
Go and re-do the mission - and after dropping off the engineer at the safe house, leave the highlighted area then go back in. You need to use the drone to listen to two phone calls the engineer makes.
Hey, Kondor6666!
If the steps advised by gunbladelad do not work please let us know.
Thank you.