How is this creating snapshots from UTM's raw images?

[dataprolet]

I'm just curious how to create a manual snapshot from a raw image in a UTM container? When I try to use the following command manually I always get an error. I'd appreciate any clarification on this. Thanks in advance!

Command I use:
qemu-img snapshot -c $tag /User/$username/Library/Containers/com.utmapp.UTM/Data/Documents/macOS.utm/Data/$id.img

Error I get:
qemu-img: Could not create snapshot '$tag': -45 (Operation not supportetd)

[Metamogul]

If $tag contains a value the command doesn't look so wrong. However according to documentation only the qcow2 file format is supported. You can use the qemu-img convert subcommand to convert an image to the qcow2 format. Does that solve your problem?