H.264 Failed to Render to Network Storage

When exporting an After Effects compositon through Adobe Media Encoder (Beta) to a Synology drive, the file is created, but it is not the correct file size. The file is unplayable and the icon is a generic Quicktime icon and not a thumnail of the video. Exporting the same compositon to the desktop works fine. I am able to export just fine with Media Encoder 2020 and 2021.

MacOS Big Sur 11.2.3

iMac 5k, 3.6 GHz 10-Core i9, 128 GB RAM

Synology FS3400 via 10G Ethernet
NAS has SMB and AFP enabled.