我收到TypeError: dest.on is not a function错误。运行此任务时，我找不到可能的错误。

var fileinclude = require('gulp-file-include');
var rename = require('gulp-rename');

var paths = {
  templates : './templates/'
}

//file include: grab partials from templates and render out html files

gulp.task('fileinclude', function() {

return gulp.src(paths.templates + '*.tpl.html')
 .pipe(fileinclude)
 .pipe(rename({
  extname: ""
 }))
.pipe(rename({
  extname: ".html"
 }))
.pipe(gulp.dest('./'));
});