transfer data to sd card fails to start

[SimeX]

Hi all,
In the storage section of settings on my Xperia Z2 there is a "transfer Data to sd card" option. it use to work just fine. Once the internal storage was awfully full and came a notification that said "75% full, transfer data to sd card" tried it like always but this time it fails to start. When I try to run it from inside the settings, also fails to start.
Any suggestions are appreciated.
Thanks

[Uliwooly · Accepted solution]

Use the file commander app > cut > paste > on the SD card.