I host the site on GitHub pages, and when I try to submit the formpree.io form, I get the following error:

Here is my code:
<form action="http://formspree.io/ example@example.com " method="post"> <div class="row uniform collapse-at-2"> <div class="6u"> <input type="text" name="_replyto" placeholder="Email"> </div> </div> <div class="12u"> <textarea name="Message" placeholder="Message..." rows="4" cols="50" maxlength="500"></textarea> </div> <br> <div style="display:none"> <input type="hidden" name="_subject" value="New submission!"> <input type="hidden" name="_next" value="thanks.html"> <input type="text" name="_gotcha"> </div> <div class="row uniform"> <div class="12u"> <ul class="actions"> <li> <input type="submit" class="special" value="Send"> </li> </ul> </div> </div> </form>
Is this due to a code error, a GitHub page error, or a formpree error?
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