Unable to purge elements

[komchan.prakaiborisuth]

I'm not sure what is wrong with my file that I can't any single element.

I use my company template for both of my files, I can purge my piping file while I can't purge my equipment file.
The file only contains mechanical equipment no other element but I can't purge other unused element.

[ennujozlagam]

try to close your file > open again tick audit > go to purge unused (if still cannot delete) go to your project browser and delete from there and see if helps. thanks