Error when compiling fonts in galp?

Question

Fonts

Invalid glob argument : undefined(failed to run)

ttf2woff, ttf2woff2 packages installed

"use strict"

let project_folder="dist";
let source_code="src";

let path={
  build:{
    html: project_folder + "/",
    css: project_folder + "/css/",
    js: project_folder + "/js/",
    img: project_folder + "/img/",
    font: project_folder + "/font/",
  },

  src:{
    html: [source_code + "/*.html", "!" + source_code + "/_*.html"],
    css: source_code + "/scss/style.scss",
    js: source_code + "/js/main.js",
    img: source_code + "/img/**/*.{jpg,png,svg,gif,ico,webp}",
    font: source_code + "/font/*.ttf",
  },

  watch:{
    html: source_code + "/**/*.html",
    css: source_code + "/scss/**/*.scss",
    js: source_code + "/js/**/*.js",
    img: source_code + "/img/**/*.{jpg,png,svg,gif,ico,webp}",
  },
   
  clean:"./" + project_folder + "/"	 
}

let {src, dest} = require('gulp'),
  gulp = require ("gulp"),
  browsersync = require ("browser-sync").create(),
  fileinclude = require ("gulp-file-include"),
  del = require ("del"),
  scss = require ("gulp-sass"),
  autoprefixer = require ("gulp-autoprefixer"),
  media_queries = require ("gulp-group-css-media-queries"),
  clean_css = require ("gulp-clean-css"),
  rename = require ("gulp-rename"),
  uglify = require ("gulp-uglify-es").default,
  imagemin = require ("gulp-imagemin"),
  webp = require ("gulp-webp"),
  webphtml = require ("gulp-webp-html"),
  webpcss = require ("gulp-webpcss"),
  svgSprite = require ("gulp-svg-sprite"),
  ttf2woff = require ("gulp-ttf2woff"),
  tt2woff = require ("gulp-ttf2woff2"),
  fonter = require ("gulp-fonter");

function browserSync(params){
  browsersync.init({
    server:{
      baseDir:"./" + project_folder + "/"
    },
    port:3000,
    notify:false
  })
}

function html(){
  return src(path.src.html)	
    .pipe(fileinclude())
    .pipe(webphtml())
    .pipe(dest(path.build.html))
    .pipe(browsersync.stream())
}

function css(){
  return src(path.src.css)
    .pipe(
      scss({
        outputStyle:"expanded"
      })
    )
    .pipe(
      media_queries()
    )
    .pipe(
      autoprefixer({
        overrideBrowserlist: ["last 5 versions"],
        cascade: true
      })
    )
    .pipe(webpcss())
    .pipe(dest(path.build.css))
    .pipe(clean_css())
    .pipe(
      rename({
        extname:".min.css"
      })
    )
    .pipe(dest(path.build.css))
    .pipe(browsersync.stream())
}

function js(){
  return src(path.src.js)	
    .pipe(fileinclude())
    .pipe(dest(path.build.js))
    .pipe(
      uglify()
    )
    .pipe(
      rename({
        extname:".min.js"
      })
    )
    .pipe(dest(path.build.js))
    .pipe(browsersync.stream())
    
}

function images(){
  return src(path.src.img)
    .pipe(dest(path.build.img))
    .pipe(src(path.src.img))
    .pipe(
      webp({
        quality:70
      })
    )
    .pipe(
      imagemin({
        interlaced:true,
        progressive:true,
        optimizationLevel:3,
        svgoPlugins:[{removeViewBox:true}]	
      })
    )
    .pipe(dest(path.build.img))
    .pipe(browsersync.stream())
}

function fonts(){
  src(path.src.fonts)
    .pipe(tt2woff())
    .pipe(dest(path.build.fonts));

  return src(path.src.fonts)
    .pipe(ttf2woff2())
    .pipe(dest(path.build.fonts));
};

gulp.task("svgSprite", function(){
  return gulp.src([source_code + "/iconsprite/*.svg"])
  .pipe(svgSprite({
    mode:{
      stack:{
        sprite:"../icons/icons.svg",
        example:true
      }
    },
  }
  ))
  .pipe(dest(path.build.img))
})

function watchFiles(params){
  gulp.watch([path.watch.html], html);
  gulp.watch([path.watch.css], css);
  gulp.watch([path.watch.js], js);
  gulp.watch([path.watch.img], images);
}

function clean(params){
  return del(path.clean);
}

let build = gulp.series(clean, gulp.parallel(js, css, html, images, fonts));
let watch=gulp.parallel(build, watchFiles, browserSync);

exports.fonts = fonts;
exports.images = images;
exports.js = js;
exports.css = css;
exports.html = html;
exports.build = build;
exports.watch = watch;
exports.default = watch;

Answer 1

gulp-ttf2woff2 use as in the example