TBM pile cap interaction simulation

when I simulate pile group and then make TBM simulation (beside or under the group of pile) in PLAXIS 3D, then adding uniform surface load on the pile cap the surface load did not simulate as uniform distribution, instead it become eccentric load on the pile cap, but when I delete the tunnel (TBM) the surface load become uniform again.
Please could clarify solution for this problem

https://we.tl/t-aGrg9qAQX6