title: gulp process terminated with code 1
body: <p>I'm trying to compile a less file to css with Gulp. But it keeps giving me <code>Process terminated with code 1.</code> errors... Does someone know what this means and why it occurs? And how I should fix it?</p>
  
  <p>This is my gulpfile.js:</p>
  
  <pre><code>var gulp = require('gulp');
  var less = require('gulp-less');
  
  gulp.task('compile less simple', function () {
          gulp.src('box-sizing.less')
              .pipe(less())
              .pipe(gulp.dest('output.min.css'));
  });
  </code></pre>