Title: Fatal error: Call to undefined function backwpup_send_no_cache_header()
Last modified: August 19, 2016

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# Fatal error: Call to undefined function backwpup_send_no_cache_header()

 *  [almarma](https://wordpress.org/support/users/almarma/)
 * (@almarma)
 * [15 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-backwpup_send_no_cache_header/)
 * Hi,
    I just installed this interesting plugin, and after installing it on other
   website that I own, I tried with other website I created, and I get this error:
 * `Fatal error: Call to undefined function backwpup_send_no_cache_header()`
 * It’s weird, because I’m using exactly the same WP release (3.1), on the same 
   server.
    It happens to me always, no matter what kind of backup I set (only file
   backup, only DB backup, etc.)
 * Any idea about what can be the problem?

The topic ‘Fatal error: Call to undefined function backwpup_send_no_cache_header()’
is closed to new replies.

 * ![](https://ps.w.org/backwpup/assets/icon-256x256.png?rev=3236141)
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 * 0 replies
 * 1 participant
 * Last reply from: [almarma](https://wordpress.org/support/users/almarma/)
 * Last activity: [15 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-backwpup_send_no_cache_header/)
 * Status: not resolved