Qt6 custom plugin cannot be loaded

Question

I am working on upgrade our lib from QT5,12 to Qt6.5

And I still build our plugins using Qmake.

After compile our plugin and install the plugin using bitrock, I got the error below:

loading error

The status is like this:

plugins on Windows

I should have 4 plugins, and NovosPackager seems working fine. NovosSimulate showed ok, but it does not appear on the QT toolbar. NovosUiDesigner have the loading error in the above picture. There should be a 4th plugin, which not even appear here. (Above are on Windows)

On Linux, 3 plugins working fine, NovosUiDesigner not appear:

plugins on Linux

If anyone could help on this?