<https://processwire.com/talk/topic/7051-email-new-user/#comment-72197>
<http://schema.org/text>
"Sorry about that - I have just committed a fix that I think should take care of it. Please let me know if it works for you now. \n\nNot sure why you got that error, but I have never seen it - maybe a PHP version difference? \n\nAlso, note that it requires PW dev due to the way I set up the module info in a separate file. \n"
<https://processwire.com/talk/topic/7051-email-new-user/#comment-68050>