IOS Image Caching fix

On iOS only the fullPath works because toURL returns path with localhost.

Correct File Path:
file://var/mobile/Applications/A453F0BF-92E6-46C7-9BA4-A7B75C91C186/Documents/imageCache/c5a56e15d9954186cd95f89a9f23c2e73e7dbf57.png