Cannot login after 'opkg install openvpn-openssl luci-app-openvpn'

I login to this router via command line every day without problems. Today, I issued a few simple commands, and now cannot login.

  1. Logged into router, issued 'opkg install openvpn-openssl luci-app-openvpn'.
  2. Before configuring openvpn, I scp'd a file from my laptop to my router.
  3. Then issued 'sysupgrade -v -c -d 10 lede-ar71xx-generic-wzr-hp-ag300h-squashfs-sysupgrade.bin'
  4. After upgrading software, I can login via luci, but cannot login via command line.

Any idea how to fix?

What is the error you receive when you attmpt to login via command line? Bad password? Try changing the password in LuCI, this should reset the SSH password as well.

It says "Permission denied, please try again.".

Is there a default openvpn password (if the user was too stupid to configure it)?