There is a problem with the compiler：make -j4

[JasonEyouzi]

An error occurs when executing the third line instruction compiler :error: no matching function for call to 'FEProblemBase::getNonlinearSystemBase()' _number_of_nl_variables(_fe_problem.getNonlinearSystemBase().nVariables()),

[ahzeeshan]

Hi, @JasonEyouzi This code was built with an old version of MOOSE (around 2018). Since then, some incompatible changes in MOOSE have broken this application. You can either use an older version of MOOSE or modify some lines in the code's header to make it work with the current version of MOOSE.