Have you tried a save that is made in the managers hotel room? Those tend to work best when used in a newer version of game.
What was version of game before the update? If it was v0.18.1 or older, you must first install patch HH v0.17+ > v0.18.2 PC Patch. That in turn needs version v0.17.x as base. There are older patches available from developers Patreon page.
If you can not sort it out, easiest way may be to download the complete v0.19.1 game, 13 gigabytes, and unzip that to a new directory. Then use a save made in tne manager hotel room.