added the following lines in Vagrantfile to fix the issue temporary. It wasn't required in Ubuntu 18.04
vbit.vm.provider "virtualbox" do |vb| vb.customize [ "modifyvm", :id, "--uartmode1", "file", File::NULL ] end
added the following lines in Vagrantfile to fix the issue temporary. It wasn't required in Ubuntu 18.04
vbit.vm.provider "virtualbox" do |vb|
vb.customize [ "modifyvm", :id, "--uartmode1", "file", File::NULL ]
end