Previously I had issues with the upgrades to 4.3.3 failing because of "stale" image transfer data, so I removed it from the database using the info given here on the mailing list and was able to complete the oVirt node and engine upgrades.

Now I have a new problem.  I can't upload a disk image anymore, which used to work.
"test connection" returns success.

In the dashboard Storage/Disks view, it starts and then stops with "paused by system"

I tried pointing it at another node, same problem. I tried restarting services ovirt-imageio-proxy on engine and ovirt-imageio-daemon on the node, same failure.

in the dashboard events when trying to upload disk I get this error
      Transfer was stopped by system. Reason: failed to add image ticket to ovirt-imageio-proxy.

or when trying to resume transfer "paused by system" giving it the local path again.
       Transfer was stopped by system. Reason: failure in transfer image ticket renewal.

I'm not sure what logs I should be looking deeper into..

Here's what the database says
engine=# select * from image_transfers;
-[ RECORD 1 ]-------------+-------------------------------------
command_id                | 59dce2b1-f8ba-44dd-9df9-c6e39773a3f9
command_type              | 1024
phase                     | 4
last_updated              | 2019-04-23 12:22:25.098-04
message                   | Uploading from byte 0
vds_id                    |
disk_id                   | 6693d5ac-d3eb-43d7-9abe-97c5197efc23
imaged_ticket_id          |
proxy_uri                 |
signed_ticket             |
bytes_sent                | 0
bytes_total               | 1996488704
type                      | 2
active                    | f
daemon_uri                |
client_inactivity_timeout | 60
-[ RECORD 2 ]-------------+-------------------------------------
command_id                | 16898219-be5b-4826-8f20-3355fa47272a
command_type              | 1024
phase                     | 4
last_updated              | 2019-04-23 16:15:34.591-04
message                   | Uploading from byte 0
vds_id                    |
disk_id                   | 3b8e3053-bfe4-49d3-abd2-5452b1674400
imaged_ticket_id          |
proxy_uri                 |
signed_ticket             |
bytes_sent                | 0
bytes_total               | 1998585856
type                      | 2
active                    | f
daemon_uri                |
client_inactivity_timeout | 60

I really need the image uploading to work. Any suggestions on what to do next?