Transfer to SD Card interruption

[Rach-O]

I'm trying to transfer my data to my SD card but it keeps popping up with 'File Transfer Interrupted' but it won't tell me why.

What should I do?

[Kez18]

Hi. I have the same issue. Bought a new 32gb card the other day, SanDisk, from argos. Had the phone 18 months and never had an sd card before but getting fed up with the phone memory being too full. I've unmounted the card, removed and out back in, and restarted phone. No luck. I'm on holiday so no pc. The storage option in settings is showing the card, 27.91gb remaining. But when I go to transfer photos, vids and music I get the message.
What else can I try to get it working? Tx