Unmount sandisk sd card warning

[Ruulady]

Last 2 days, I got unmount SanDisk sd card warning.  All instructions say to go to storage and click "unmount sd card". I don't have that option on my Xperia C4. This has happened a couple times before over the last 2 yrs, but u don't know what I did to correct it last time. Please help. Thanks 

[Uliwooly]

@Ruulady 

What do you see under Settings > storage > SD card?

[Ruulady]

There's no "sd card" under setting, storage at all. I know that's what all the info is saying, but there's no sd card to click on

[Uliwooly]

@Ruulady 

Go to settings > storage & memory > remove the SD card (since it's unmounted) > reinsert the SD card > see if anything happen