No Owner for map after upgrading from 2.2 to 3.4

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Good morning,

Need some helps:

I upgraded Zabbix Server from version 2.2 to 3.4
And now I cannot view my map even that the object is existing.
After checking the property of the map, I can see it does not have owner.
So any change I want to make fails.

I tried to create a new map, and also I cannot add an owner.

You can refere to the screen shot.

Thanks in advance for your great help.