Openfoam-calculix: FLuid part stuck at "---[precice] Setting up primary communication to coupling partner/s"

perpendicular-flap-OF-Calculix.zip (24.1 KB)
I try to use OpenFOAM-Calculix. I installed the OpenFOAM-adaptor and calculix-adaptor. I run two different cases, all being faced with stuck at “—[precice] Setting up primary communication to coupling partner/s”, when using openfoam-adaptor to run.
My file is attached. I open two terminals and run separately at the same time: The soild part could run until the end, but I did not see something like:"—[precice] I am participant “Solid”
—[precice] Setting up primary communication to coupling partner/s" in the log

The fluid terminal just stuck at “—[precice] Setting up primary communication to coupling partner/s”.

I thought it may be that the openfoam v2406 is incompatible, so I installed openfoam-10, but the same problem occurs.

Are there any potential reasons for this? Thanks!

solved! we should use ccx2.20, not ccx 2.21

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