mips_virt_manager_ubuntu

Unable to complete install: 'XML error: No PCI buses available'

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 65, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/createvm.py", line 2001, in _do_async_install
    installer.start_install(guest, meter=meter)
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 701, in start_install
    domain = self._create_guest(
  File "/usr/share/virt-manager/virtinst/install/installer.py", line 649, in _create_guest
    domain = self.conn.createXML(install_xml or final_xml, 0)
  File "/usr/lib/python3/dist-packages/libvirt.py", line 4366, in createXML
    raise libvirtError('virDomainCreateXML() failed')
libvirt.libvirtError: XML error: No PCI buses available

<domain type="qemu">
  <name>mipsel</name>
  <uuid>e1906252-53df-459f-9f0a-22be80e8f3e2</uuid>
  <title>mipsel</title>
  <memory>1048576</memory>
  <currentMemory>1048576</currentMemory>
  <vcpu>2</vcpu>
  <os>
    <type arch="mipsel" machine="malta">hvm</type>
    <boot dev="hd"/>
  </os>
  <clock offset="utc"/>
  <devices>
    <emulator>/usr/bin/qemu-system-mipsel</emulator>
    <disk type="file" device="disk">
      <driver name="qemu" type="qcow"/>
      <source file="/kvm/vms/mips/mipsel.img"/>
      <target dev="vda" bus="virtio"/>
    </disk>
    <interface type="bridge">
      <source bridge="net"/>
      <mac address="52:54:00:ed:9f:71"/>
    </interface>
    <console type="pty"/>
  </devices>
</domain>