i moved the sims 4 to an external hard drive

i moved the sims 4 to an external hard drive and now clothes and other things are shown as white with red and questionmarks. 

I did everything right according to the internet (choosing a different location for the sims to download etc.) and i also putted the documents in there but it still isn't working.
and its not about CC. But basically everything because the other things have black markings.

If anyone can help me out, that would be amazing!

Thank you :)

This is what i see: