Since the latest 5.10.13 release it seems like binder and ashmem modules are not included anymore. It worked 2 days ago but now they seem gone.

modprobe -a binder-linux ashmem-linux
modprobe: WARNING: Module binder-linux not found in directory /lib/modules/5.10.13-zen1-1-zen
modprobe: WARNING: Module ashmem-linux not found in directory /lib/modules/5.10.13-zen1-1-zen