I just recently upgraded to FME Server 2020.0.1 and noticed the attachments in the emailer transformer wouldn't allow me to specify a file with the direct path of my pdf in the Resources folder. This worked in previous versions of FME Server.
$(FME_SHAREDRESOURCE_DATA)/resources/example.pdf
It did work when I created an attribute with the path and used it as the attachment Source File.
Is this change by design, or perhaps a bug?
Invalid File Path
Valid File Path