Why does my After effects lose media constantly?

Okay so i recently bought after effects newest version to fix this problem but it still isnt fixed!
So everytime i play my project back a few times i get these errors below and honestly its getting tiring having to reload footage/readd footage/replace footage, is this a bug with everyone or just me?
All my clips are in one file, i cleared my disk cache and everything. these clips are not premier related so i dont know what other fixes may help end this issue because it is honestly very  inconvienient.