[libvirt-users] Error creating virtual network: failed to run '/usr/sbin/dnsmasq --version': : Success

I deleted my port virbr0 using brctl command and now when I want to create a virtual network, it gives me this error: Error creating virtual network: failed to run '/usr/sbin/dnsmasq --version': : Success Here is my systemlog: https://pastebin.com/xjuVnsyL How to rectify this?