Uploads only start at 8am

Got a Tesla Powerwall, using the pvoutput integration service, all working fantastic until the 23rd Dec.

Now it seems to only start uploading from 8am. I changed nothing between the 22nd when it was working fine and now.

Checking the pw log, it shows the lines starting from 8am
on the pvoutput log it shows lines from midnight

PC clock and timezone is correct.

Any ideas what I should check ?

Disk full?

Is it only uploading while the solar output is above 0W?

Is there any activity such as querying the PW gateway before 8AM?

EDIT: seems to timezone config issue - https://forum.pvoutput.org/t/upload-timestamps-changed-after-powerwall-reboot/1268/9