Fatal error on execution of surfaceFeatureExtract under version 2012 patch 210414

[FCLC]

Attempting to follow video two from the wiki here: https://wiki.openfoam.com/Multiphase_(VOF)_Simulation_Project_by_Jozsef_Nagy

Build  : _e91649cfd8-20210420 OPENFOAM=2012 patch=210414
Arch   : "LSB;label=32;scalar=64"
Exec   : surfaceFeatureExtract
Date   : Jun 19 2021
Time   : 12:39:08
Host   : tirpitz
PID    : 17964
fileName::stripInvalid() called for invalid fileName /home/felix/cad/cfd/learningopenfoam/fillingOfTank/mesh
    For debug level (= 2) > 1 this is considered fatal
OpenFOAM-2012:~/cad/cfd/learning openfoam/fillingOfTank/mesh/