之前stata13时遇到过，换stata15后就可以正常导入了

看infix命令的manual吧
dictionary不是路径的含义



[D] infix (fixed format) -- Import text data in fixed format
                            (View complete PDF manual entry)


Syntax

        infix using dfilename [if] [in] [, using(filename2) clear]

        infix specifications using filename [if] [in] [, clear]

    If dfilename is specified without an extension, .dct is assumed.  If dfilename contains embedded
        spaces, remember to enclose it in double quotes.  dfilename, if it exists, contains

        --------------------- begin dictionary file ---
        infix dictionary [using filename] {
                * comments preceded by
                * asterisk may appear freely
                specifications
        }
        (your data might appear here)
        ----------------------- end dictionary file ---