Some months ago I took a picture and the phone rebooted in the meanwhile.
Today I just checked why my camera folder was no longer indexed in gallery (I had problems from that day) and I realized that I have a 0B size picture file corrupted, struck in the file system, that cannot be deleted from UI (built in filemanager, File Browser app…).
Is there a way to delete that file / solve the corruption (like with fsck)?
You can try via terminal (need to enable developer tools via settings) or you might try the filesystem check and repair as option if the recovery mode (you’ll find docs on zendesk).
Have you tried to delete from terminal as root? What are the permissions of the file?