@ehsan230564 , As @Nash suggested, VPN subnet translation could be an option here. Also, one more thing that might work for you is to configure a full tunnel VPN from the spokes to their Hubs. Since the two hubs will exchanges routes between them, as long as you are configuring full tunnel between from spokes connected behind the hubs, all the spokes should be able to reach that subnet no matter behind which hub that subnet resides.
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>Since it is not allowed configure the both the HUB in same subnet.
This is incredibly complicated to do - and I would not do it for a setup of this size. Usually it is done for large DCs.
You will need a layer 3 switch and then a stub nework from the switch to each MX. Each MX needs to be in a different network, and a static route to the server subnet via their stub. Each hub than then publish the static route into AutoVPN.