Title: Cannot modify headers error
Last modified: March 1, 2023

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# Cannot modify headers error

 *  [twcfan92](https://wordpress.org/support/users/twcfan92/)
 * (@twcfan92)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-headers-error-2/)
 * When I try to edit a page on my WordPress site, I get the following error: “Cannot
   modify header information.” When I view the html source of the error, I can see
   that the plugin is outputting CSS from one of the reusable content blocks I’ve
   included on the page. If I disable this plugin, I don’t get the error when I 
   save a page. How can I avoid this error? Thanks.
    -  This topic was modified 3 years, 2 months ago by [twcfan92](https://wordpress.org/support/users/twcfan92/).

The topic ‘Cannot modify headers error’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [twcfan92](https://wordpress.org/support/users/twcfan92/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-headers-error-2/)
 * Status: not resolved