Cannot start because required game data is missing or damaged – Crinrict's Sims 4 Help Blog

This error is most often caused by incompatible mods. It can also be a corrupt installation.

Fix: The Sims 4 Game Data Incomplete error

Sims 4 Growing Together & Infant Update Bugs – Maple Simmer

Cannot start because required game data is missing or damaged. Please repair or reinstall game via origin. Help! : r/PiratedGames

Fix Sims 4 Error at start up! (The contents of your user data)

Running your Sims 4 folder from an external drive – Bluebellflora

Running your Sims 4 folder from an external drive – Bluebellflora

Sims 4 Game Issues – Maple Simmer

How do you reset Sims?

Unable to Start, Initialization error at startup – Crinrict's Sims 4 Help Blog