i cant open lets play

hey ! thank you so much for answering, i did what you said and it worked, how am i supposed to retrieve my saved games and cc ? thank youuu

@marrokaansebelg  The first step is to sort through your mods and custom content.  It's entirely possible that this problem happened because you have one or more broken files in the Mods folder.  So test them in batches, or if you have a lot of files to go through, use the 50/50 method:

https://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content#The_50.25_Method

Once you've done that, you can copy the contents of the saves and Tray folders from the old Sims 4 folder to the new one, plus Screenshots and Recorded Videos if you want to keep those.  The other files can be discarded—the game will recreate them as necessary.  With your saves and Tray files in place, you can pick up where you left off.

@marrokaansebelg You can also check the Broken/Updated Mods list and the previous Broken/Updated Mods list  before doing a 50-50. Often, those lists will be enough to solve your problem by removing listed broken mods and updating others. (Be sure to delete  the old mod before adding the new one.)

In addition to the 50-50 instructions linked above, be sure that any script mods are tested alongside their dependencies (core mods, injector mods) if they have them. If the core mod or injector mod is not also there, the game just won't see the script mod and you can't tell if it's broken or not. Details in 50-50 in the How To post in this forum.