...wow okay. Well I have like 40 mods installed truthfully... Like I have almost all the A19 mods that enhance the game and add fun things to do and explore because otherwise (for me) there is no point in really playing past the 7 day Blood Moon... But the Mansion doesn't work as intended, the Horses never showed up anywhere that I could find, the Mead Hall (not sure who owns that one - would have to look it up) never showed up (yet)...Just downloaded, created a new rwg and tested it. No problems when its the only mod in the list. To get any idea, a list of the mods you're using and your error log will be required.
I forced the quest through the command you listed but that didn't do anything either even when I got the key and crafted the Stone Axe. So I basically just broke the wall down next to the door and walked in, killed some ghosts and holy hell... There's a million wall safes. At this point since nothing works it just becomes another POI to loot I guess because I'm tired of starting a new random map after I get so far in the game...
...meh.
I dunno...