Crash with LittleNPCs on Multiplayer

Steps to reproduce:

Create a new mods folder with these mods: (Content Patcher, LookupAnything, Skip Intro)
Create a new multiplayer save named LittleNPCs.
Join the save from a second Stardew Valley instance (same installation, same mods folder, connecting with 127.0.0.1)
Create a farmhand.
Run debug houseUpgrade 2 from farmhand's console to upgrade the farmhand's cabin.
Run debug marry Haley from farmhand's console to marry Haley.
Sleep with both players to advance to the next day.
Run debug pregnant from farmhand's console and sleep. At the night name farmhand's first children.
Run debug child from farmhand's console until the first child is at walking stage (Check with LookupAnything).
Run debug pregnant from farmhand's console and sleep. At the night name farmhand's second children.
Run debug child from farmhand's console until the second child is at walking stage (Check with LookupAnything).
Sleep again and close the game.
Add LittleNPCs to the mods folder.
Open the game and load the save.
Join the save with farmhand.
As soon as the farmhand joins, main farmer's console is spammed with errors.
Entering farmhand's cabin crashes main farmer's game.

mus-candidus / LittleNPCs