Error with Chrome remote desktop on Ubuntu 18.04

Question

When I execute

/opt/google/chrome-remote-desktop/chrome-remote-desktop --start

I get the following:

 [0519/101800.292827:INFO:remoting_user_session.cc(688)] Daemon process started in the background, logging to      

   /tmp/chrome_remote_desktop_20180519_101800_rBUmfW'
    Using host_id: 6d708e3d-aaba-fe25-6904-3c7a2c72b5ba
    Launching X server and X session.
    Starting Xvfb on display :20
    X server is active.
    Launching X session: ['/usr/sbin/lightdm-session']
    Launching host process
    ['/opt/google/chrome-remote-desktop/chrome-remote-desktop-host', '--host-config=-', '--audio-pipe-name=/home/akhilesh/.config/chrome-remote-desktop/pulseaudio#0b9e897dae/fifo_output', '--server-supports-exact-resize', '--ssh-auth-sockname=/tmp/chromoting.akhilesh.ssh_auth_sock', '--signal-parent']
    wait() returned (31039,256)
    wait() returned (31042,26112)
    Host process terminated
    OAuth credentials are invalid - exiting.
    Cleanup.
    Terminating X server
    Terminating session
    Log file: /tmp/chrome_remote_desktop_20180519_101800_rBUmfW

This is on Ubuntu-18.04. Here is the log file for the same: log file.

I have searched online, but haven't found anything close. I have tried the following things:

1. Logging out and logging back in. (as suggested on google forums)
2. Reinstall several times.
3. Deleting the config file

I am not sure what causes this error. Let me know if any additional details are required. Any help would be really appreciated. Thank you in advance.