SD Clone fails to create Sparse Image - Where is this "LOG" to check?

Tried to convert the (raspberry Pi 32Gb SD card) saved image .zip to the sparse image in prep for size-reducing) but I get that annoying fail sound and a dialog telling me to check the log file for more info. But it gives me no path to check the log file and it’s not in the same directory where I’m doing all the file operations ( ~/Downloads.)… WTH?

Help! (Please)