gauss fails to compile

/builds/HPC2SE-Project/pacxx-samples/gauss/gauss.cpp:111:12: error: no matching member function for call to 'launch'
      exec.launch(compute3, {{ROW_SIZE - t - 1}, {ROW_SIZE + 1 - (ROW_SIZE-1-t)}}, t, index);
      ~~~~~^~~~~~
/opt/pacxx/include/pacxx/Executor.h:166:8: note: candidate function template not viable: requires 2 arguments, but 4 were provided
  void launch(L callable, KernelConfiguration config) {
       ^
/opt/pacxx/include/pacxx/Executor.h:172:8: note: candidate function template not viable: requires 3 arguments, but 4 were provided
  auto launch(L callable, KernelConfiguration config,
       ^

See any run in this pipeline: https://zivgitlab.uni-muenster.de/HPC2SE-Project/pacxx-samples/pipelines/5100