Segementation error on coupling turbomachinery settings with structural analysis

[LorenzSLH]

Describe the bug
Coupling a turbomachinery simulation with a structural mechanic simulation seems to result in an segmentation error. I have tested the case by turning off the turbomachinery settings and it runs perfectly. However when applying markers to the inlet and outlet of the section, it returns the error.

Case: radial turbine, where i would like to calculate the stress on the blades.

Attached: config files and log .
fsi.cfg -> multiphysical file to couple both zones
rotor.cfg -> describing the compressible flow in the rotor section
blade.cfg -> structural analysis

Bug report checklist

• Consulting the build instructions (https://su2code.github.io/docs_v7/Build-SU2-Linux-MacOS/).
• Looking for similar problems on GitHub or CFD-Online (https://www.cfd-online.com/Forums/su2/).
• Updating to the newest version of SU2 (either develop, master, or the pre-built executables https://su2code.github.io/download.html).

Desktop:

• OS: Ubuntu 20.04 LS (WSL)
• C++ compiler and version: 9.4.0
• MPI implementation and version: 4.0.3
• SU2 Version: 7.5.1

Files
fsi.txt
configBlade.txt
configRotor.txt
log.txt

[pcarruscag]

Just to be sure, you tried the develop branch right?
Please provide everything necessary to run the case, just the configs is not enough to reproduce the issue.

[pcarruscag]

Can you provide the rest of the files @LorenzSLH?