Why does SourceMap crash?

Question

css

SourceMap works every other time, at the most necessary moments, as always, you cannot rely on it .. here is the task where sourcemaps are collected.

//js
gulp.task('js', function() {
    gulp.src('js/*.js')
    .pipe(sourcemaps.init())
    .pipe(concat('script.js'))
    .pipe(sourcemaps.write('map'))
    .pipe(gulp.dest('../js'))
});

//sass
gulp.task('sass', function() {
    gulp.src('sass/style.scss')
        .pipe(sassGlob())
        .pipe(sourcemaps.init())
        .pipe(sass({ outputStyle: 'expanded' }).on('error', sass.logError))
        .pipe(autoprefixer({ browsers: ['last 4 versions'], cascade: false }))
        .pipe(sourcemaps.write('map'))
        // .pipe(csso())
        .pipe(gulp.dest('../css'))
});