gulp 3 upgrade to gulp 4 tasks did not complete: prod, compile

Question

I am in the process of upgrading Gulp from version 3 to 4 . I am getting this error about this task did not complete. Is there anything I need to change this in the compile task for version 4 of gulp? I dont think its correct to add an async to the async gulp.series "clean" task.

console

[09:33:16] Using gulpfile C:\WebProjects\ITF\ITF.Web\Gulpfile.js
[09:33:16] Starting 'prod'...
[09:33:16] Starting 'compile'...
[09:33:16] The following tasks did not complete: prod, compile
[09:33:16] Did you forget to signal async completion?
Process terminated with code 1.

gulp

    gulp.task("prod", gulp.series(
            "compile",
            "bundle",
            "min",
    ));
    
    gulp.task('clean', function () {
        return gulp.src(paths.dist, { read: false }).pipe(rimraf({ force: true }));
});

    gulp.task("compile", () => gulp.series("clean", function () {
        return gulp.src("./App/**/*.ts")
            .pipe(inlineNg2Template({
                base: "/",                  // Angular2 application base folder
                target: "es6",              // Can swap to es5
                indent: 2,                  // Indentation (spaces)
                useRelativePaths: false,     // Use components relative assset paths
                removeLineBreaks: false,     // Content will be included as one line
                templateExtension: ".html", // Update according to your file extension
                templateFunction: false    // If using a function instead of a string for `templateUrl`, pass a reference to that function here
            }))
            .pipe(typescript(tsProject))
            .pipe(ignore("References.js"))
            .pipe(gulp.dest("dist/App"))
            .on("finish", function () {
                console.log("Results finish");
                console.log(gulp.src);
            })
            .on('error', function (err) { console.log(err.message); });
    }));