Mulitple vpn site-2-site with same subnet

We want to access a remote site with ip 192.168.30.0/24 and a 10.0.1.0/24 subnet.  Our local subnet is 192.168.125.0/24.
I guess we can't use f.ex 192.168.0.0/16 since that won't cover the 10.0.1.0/24 network and the only solution is to use 2 separate vpns. 
But when we try to add the second vpn to 10.0.1.0/24 it say we can't use our 192.168.125.0/24 as subnet since we already have it specified in our local subnet-policy on our first vpn to the 192.168.30.0/24 network.

how would we solve this so we can reach both the network on the other site? both site using Nebula 200 USG.