MAJOR GLITCH: all images disappearing??

I changed literally nothing in the project. I exported one of the layers and when I went back all the frames were blank. The cels and layers are still there in the x sheet but everything, even in the project folder is blank. I don’t know why this is happening! Really need help.

Are you editing the project on the internal hard drive of the system?
Are you avoiding to use accented letters, spaces and special symbols
in the software and folder path where the project is being stored?

Did you rename or move the project while it was open for editing?
You could contact support to have a look on your system.