Virtual Machine Manager: Error attempting to add pool via samba share

Summary

I am unable to add a cifs / samba storage pool to Virtual Machine Manager, an error appears

Steps to reproduce

1. Click Create New VM
2. Click Browse next to the storage path input
3. Click + to create a new storage pool, choose Type netfs Network Exported Directory
4. Enter a target path (I chose /home/tracey/libvirt_images)
5. Format auto (the only choice), Host Name htpc, source path isos

Expected result

I am able to create the pool based on the samba share folder

Actual result

An error appears

Error creating pool: Could not start storage pool: internal error: Child process (/usr/bin/mount -o nodev,nosuid,noexec htpc:isos /home/tracey/libvirt_images) unexpected exit status 32: mount: /home/tracey/libvirt_images: bad option; for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount. helper program.
dmesg(1) may have more information after failed mount system call.

dmesg does not have any information about this.
I have other pools that were successfully created based on filesystem directories.

Environment

• Is system up to date?

Repo

Unstable

Desktop Environment

Plasma

System details

Operating System: Solus 4.4
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10
Kernel Version: 6.5.5-258.current (64-bit)
Graphics Platform: X11
Processors: 16 × 11th Gen Intel® Core™ i7-11800H @ 2.30GHz
Memory: 62.5 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2
Manufacturer: Dell Inc.
Product Name: XPS 17 9710

Other comments

According to https://libvirt.org/storage.html under "Network filesystem pool", cifs is a valid filesystem type.
cifs-utils is installed, system is up to date

I verified I can browse the share with the guest user with

smbclient //htpc/isos -U guest 

I noticed in the error that it is using "htpc:isos" rather than "//htpc/isos", which is what I'd expect for mounting a samba share

Begin by reproducing the Virtual Machine Manager storage-pool flow described in the steps and inspect the reported mount command. Compare the generated htpc:isos source with the expected CIFS share syntax; done means creating the pool from the Samba share succeeds without the reported mount error.