All the filles projects deleted

naddiamobil 8 months ago in Android 0

I have  problem.After some time since I did not use the application, I started it to see my animations, but when I wanted to open a project, I saw a window saying that the filles were lost and that it could be because of the SD card. But I did not delete anything from the card and I did not post it. That happened at all my projects and I had a lot. The question is: I can recover them because are very important to me?