[texworks] Is not properly configured

[Haven’t decided yet還沒決定]

Hi! I had install the appropriate version for my old Mac, but no matter how I use it’s still
Show me "pdflatex Is not properly configured” and I try to find the answer from internet,
But I still can’t not find , could u help me to solve this problem? Thank u so much
 


----- configuration info -----
TeXworks version : 0.6.7 ("github") [r.23c4c74, 2022/2/26 下午7:03]
Install location : /Users/pengyouen/Desktop/TeXworks.app
Library path     : /Users/pengyouen/Library/Application Support/TUG/TeXworks/
pdfTeX location  : not found
Operating system : Mac OS X 10.14.6 (Darwin Kernel Version 18.7.0: Tue Jun 22 19:37:08 PDT 2021; root:xnu-4903.278.70~1/RELEASE_X86_64)
Qt version       : 5.12.12 (build) / 5.12.12 (runtime)
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