# Class 'wp\_bootstrap\_navwalker' not found **URL:** \ **Category:** Beginners\ **Tags:** tutorial\ **Created:** [February 24, 2017, 3:38pm UTC](https://forum.pinegrow.com/t/class-wp-bootstrap-navwalker-not-found/729 "2017-02-24T15:38:04Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Auke](https://avatars.discourse-cdn.com/v4/letter/a/ba8739/32.png) [@Auke](https://forum.pinegrow.com/u/Auke)\ **Post date:** [February 24, 2017, 3:38pm UTC](https://forum.pinegrow.com/t/class-wp-bootstrap-navwalker-not-found/729/1 "2017-02-24T15:38:04Z")
Hello community members, I am learning to use Pinegrow for creating Wordpress themes. Just started with the tutorial “01 how to create a wordpress theme in less than 20 minutes” Thing is that when i preview the theme i get this error: Fatal error: Uncaught Error: Class ‘wp\_bootstrap\_navwalker’ not found in /app/public/wp-content/themes/pinegrow20m/index.php on line 41 I guess the class is not included at all. There is no including in the theme index.php and there is no functions.php. I could create that but it is not mentioned in the tutorial… I love to hear from you guy’s Auke. ---
**Author:** ![Auke](https://avatars.discourse-cdn.com/v4/letter/a/ba8739/32.png) [@Auke](https://forum.pinegrow.com/u/Auke)\ **Post date:** [February 24, 2017, 3:44pm UTC](https://forum.pinegrow.com/t/class-wp-bootstrap-navwalker-not-found/729/2 "2017-02-24T15:44:51Z")
Woopssss… Found it already. I did not export the theme. When exporting the theme the functions.php is created. ---
**Author:** ![Rob](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.pinegrow.com/rob/32/9_2.png) [@Rob](https://forum.pinegrow.com/u/Rob)\ **Post date:** [February 27, 2017, 10:35am UTC](https://forum.pinegrow.com/t/class-wp-bootstrap-navwalker-not-found/729/3 "2017-02-27T10:35:13Z")
@Auke good that you figured it out.