What does sd card is blank or has unsupported files mean?

[AC Question]

what does sd card is blank or has unsupported files mean.

my phone came up with a warning that my sd card is blank

 

[Golfdriver97]

Re: what does sd card is blank or has unsupported files mean.

Welcome to the forums. The error is probably due to unsupported files. Have you put anything new on it recently?