1. Open the Pr software in the computer, and the material loss window will pop up. Click Offline and Offline All as required.
2. Check the file name of the missing material project, find the file in the computer, and see if it has been moved.
3. If the file is moved, paste the moved file into the original path of the project, reopen Pr or refresh the project, and the problem of material loss can be solved.
4. The Recycle Bin is one of the system folders in Microsoft Windows operating system, which is used to store documents temporarily deleted by users, and the files stored in the Recycle Bin can be recovered.