Sims 4 Gallery Issue

Is this with or without mods/cc ?

I don't have mods like UI or anything. Just a couple of CC's. 

Try the following

• Close the game
• Rename Documents\Electronic Arts\The Sims 4 to Documents\Electronic Arts\The Sims 4_Old
• Repair the game
• Start the game. All your content will be gone now as the game created a new folder. All your saves/.. is still in the old folder so not to worry. 
• Start a new save game
• Check if you still have the error
• Report back with your results for further steps on how to get your stuff back.