The missing [default]/mfixsolver

I just installed MFix to my laptop and now I’m going through the tutorials. The odd things is that I can’t seem to select the default mfixsolver, [default]/mfixsolver. Hence, I can’t run the simulation. Please somebody help me, I am clueless to what I did wrong as I have followed every single instructions in the installation guide.

If you use are using Linux, use $CONDA_PREFIX instead of %CONDA_PREFIX%

Thank you so much, really appreciate your help.