我在 manjaro-linux 上使用 tex-maker。编译过程中出现错误:
! Fatal fontspec error: "cannot-use-pdftex"!
! The fontspec package requires either XeTeX or LuaTeX.!
! You must change your typesetting engine to, e.g., "xelatex" or
! "lualatex" instead of plain "latex" or "pdflatex".!
! See the fontspec documentation for further information.!
! For immediate help type H <return>.
!............................................... \msg_fatal:nn {fontspec} {cannot-use-pdftex}
如何修复它?