Avamar 19.1: 500 server internal error

Good morning,

We recently updated our Avamar from v7.5 to v19.1.  When I try to use the Avamar Administrator client, it shows the old version. I'm able to log on and it tells me:

Your Avamar Administrator is incompatible with the server

I click Download and Install and it tries to take me to the web gui/dtlt page to download the new version. I get this error: 500 server internal error.

I can get to the /avi page, and when I run dpnctl status I get this:

gsan status: up
MCS status: up
emt status: up
backup scheduler status: up
maintenance windows scheduler status: enabled
unattended startup status: disabled
avinstaller status: up
connectemc status: down
ddrmaint-service status: up

I've got a ticket in with support, just wanting to see if anyone else had encountered this, or a similar issue.