Why doesn't include files work in gulp-file-include module?

Question

JavaScript

Good afternoon.
Who in gulp uses gulp-file-include?
There is a problem: in fact, the inclusions themselves do not work, i.e. it's just that the file is transferred from one place to another without inserting pieces of code that I include. The task code is taken from off. module pages on Npm:

gulp.task('fileinclude', function() { 
gulp.src('./src/*.html') 
.pipe(fileinclude({ 
prefix: '@@', 
basepath: '@file' 
})) 
.pipe(gulp.dest('./src/html/')); 
});

In index.html, I write @@include ('./templates/head.html') in the right place, run the task, it runs without any errors in the console, and the same Index.html file arrives in response, in which instead of of the desired piece of code from the head.html file, the same line with @@include remains the same.
What could be the problem?
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