# Using kirup basic contact form - problem

**URL:** <https://forum.kirupa.com/t/using-kirup-basic-contact-form-problem/329845>\
**Category:** Uncategorized\
**Created:** [October 24, 2012, 4:53am UTC](https://forum.kirupa.com/t/using-kirup-basic-contact-form-problem/329845 "2012-10-24T04:53:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![F\_Crumbles](https://avatars.discourse-cdn.com/v4/letter/f/73ab20/32.png) [@F\_Crumbles](https://forum.kirupa.com/u/F_Crumbles)\
**Post date:** [October 24, 2012, 4:53am UTC](https://forum.kirupa.com/t/using-kirup-basic-contact-form-problem/329845/1 "2012-10-24T04:53:20Z")

</div>

I followed the instructions for the contact form [http://www.kirupa.com/html5/creating\_email\_contact\_form.htm](http://www.kirupa.com/html5/creating_email_contact_form.htm)

However, I received this message:\*\*

Warning\*\*: Cannot modify header information - headers already sent by (output started at /home/uniteza1/public\_html/mailer.php:2) in **/home/uniteza1/public\_html/mailer.php** on line **20**

I have no idea what this means. What did I do wring?  
Thank you.