Cannot create VM with emulated TPM

Hello,

I tried to create a virtual machine with virt-manager today, and since the OS was Win11 this enabled TPM emulation. For some reason this does not work. I get:

Successfully authored TPM state.
Ending vTPM manufacturing @ Sun 21 Apr 2024 01:11:17 PM BST
Data client disconnected
swtpm at /usr/bin/swtpm does not support TPM 2

I have created Win11 VMs in the past with no issues. Any ideas what has changed?

# rpm -qf /usr/bin/swtpm
swtpm-0.9.0-7.fc41.x86_64