Dear Hans van der Meer, According to your word, I added the PATH to texmf-dist(texlive 2017) to the ConTeXt(LuaTex).engine directly. And, in the terminal, run mtxrun —generate and run luatools —generate once more. Then ConTeXt(LuaTeX) is working fine. Now, I can compile ConTeXt files using either texlive-2017 or minimal-beta. Thank you again. Best regards, Dalyoung