Virtual manager error

Hi everyone, when i try to run a VM through virt-manager application (Slackware 15), I get the following error: *Errore nell'avvio del dominio: internal error: unknown architecture 'loongarch64'** ** **Traceback (most recent call last):** **  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 72, in cb_wrapper** **    callback(asyncjob, *args, **kwargs)** **  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 108, in tmpcb** **    callback(*args, **kwargs)** **  File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 57, in newfn** **    ret = fn(self, *args, **kwargs)** **  File "/usr/share/virt-manager/virtManager/object/domain.py", line 1402, in startup** **    self._backend.create()** **  File "/usr/lib64/python3.9/site-packages/libvirt.py", line 1373, in create** **    raise libvirtError('virDomainCreate() failed')** **libvirt.libvirtError: internal error: unknown architecture 'loongarch64'* How can i fix it? Cordially Domenico