Mounted filesystem discovery Not Show Drive D And E

[Gidi]

Hi everyone
I cant Monitor all my servers Mounted filesystem discovery - vfs.fs.size[{#FSNAME},pfree] when they had D&E Drives- I get this error message:

Cannot create item: item with the same key "vfs.fs.size[D:,pfree]" already exists
I check my configuration in Zabbix and has no same key.

when i monitor drive C, F and so on its OK.

Does anyone has an idea?

Thank you
Gidi