Title: Fatal Error for function.php
Last modified: August 19, 2016

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# Fatal Error for function.php

 *  [kaihao96](https://wordpress.org/support/users/kaihao96/)
 * (@kaihao96)
 * [16 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-for-functionphp/)
 * Hello everyone,
 * I have gotten this error suddenly:
    `Fatal error: Call to undefined function 
   untrailingslashit() in /home/mrchee/public_html/cssfeed/wp-includes/functions.
   php on line 365`
 * I truly have no idea why this has happened. I was just posting normal, I did 
   not edit any file or add any plug in.
 * Thanks.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [16 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-for-functionphp/#post-1379145)
 * Try re-uploading the wp-includes folder from a **fresh** download of WordPress.
 *  Thread Starter [kaihao96](https://wordpress.org/support/users/kaihao96/)
 * (@kaihao96)
 * [16 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-for-functionphp/#post-1379500)
 * [@esmi](https://wordpress.org/support/users/esmi/): Okay, I will try that now.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Fatal Error for function.php’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [kaihao96](https://wordpress.org/support/users/kaihao96/)
 * Last activity: [16 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-for-functionphp/#post-1379500)
 * Status: not resolved

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