Open the Final Cut Pro X software.
Click the "Final Cut Pro" menu on the menu bar, and then select Preferences.
In the Preferences window, click the Export tab.
In the Export tab, click the Clear button.
In the confirmation dialog box that pops up, click Delete All to clear all caches.
Click the Finish button to close the window.
In addition, you can manually delete the Final Cut Pro X cache file. Cache files are stored in the following folder:
~/Library/Caches/com . apple . final cut
You can find this folder by following these steps:
Open the Finder application.
Click the Go menu on the menu bar, and then select Go to Folder.
Enter the following path in the pop-up dialog box: ~/library/caches/com.apple.final cut.
Open this folder and manually delete the files in it.
Note: Deleting the cache file may cause Final Cut Pro X to run slowly, but you can regenerate the cache if necessary. It is recommended to back up all important projects and files before clearing the cache.