Did you happen to take a snapshot before performing the update? If so, restoring from that is probably your safest bet.
Posts made by Danp
RE: "Cannot GET /" Error after update
FWIW, I just tried updating and did run into an issue. However, I suspect yours is caused by an incorrect Node version.
node -vreturns something other than 8.16.0, then you should try switching to that version with the command
In my case, I get a spinning cursor after logging in. Checked the logs and found the following --
Jun 07 20:26:58 ubuntutest xo-server: 2019-06-07T20:26:58.702Z - xo:api - [WARN] email@example.com | xo.getAllObjects(...) [4ms] =!> XoError: invalid parameters