For future reference, most devices have a screenshot function built in, so long as the device is not frozen. For instance on Windows 7, pressing "PrtSc" on the keyboard will put the entire display into the clipboard, "Alt" + "PrtSc" will do just the current application. I just open a image editor like Windows Paint, paste the image, crop it to the smallest necessary size, and remove any identifying text. It is much easier to see what is on screen this way.
That said, I can easily tell what happened on the terminal("dos script"), which is good since the next line "Mansion.gd:1997" that tells me where the error occurred. Unfortunately, that error is a secondary error caused by loading corrupt data from a save file. I have seen a similar case before as part of an error caused by my bugfix patch, which caused an error when returning to the mansion and resulted in corrupt data. Unless you can reproduce the steps before saving the progress, the source of the first error cannot be identified.
Removing the corrupt data from the save file is simple, open the save file with a text editor and find "capturedgroup". It should look similar to this:
"capturedgroup":["[Reference:888056]","[Reference:1066107]","[Reference:1089983]","[Reference:10490]"]
Delete the contents of the outermost brackets to get this:
"capturedgroup":[]
The corrupt data was improperly saved data of captured persons, which cannot be recovered.
I have a bugfix patch on Strive's Discord(https://itch.io/t/284398/discord) in the #mods channel. It fixes many things for vanilla gameplay, though I don't know if your problem is covered (there is a fair chance that it will never happen again). It is not compatible with many mods due to fixes and improvements to the mod system, though random portraits will likely work. Just need to apply it to unmodded game, delete backup, then start game, and apply mods.