I got same error.
When you use normal ACF (not Pro), the following link will help you.
http://support.advancedcustomfields.com/forums/topic/wp-4-3-1-acf-4-4-3-when-using-acf_form-script-bug/
I am using Pro version, I have edited below.
ABSPATH . /wp-content/plugins/advanced-custom-fields-pro/api/api-template.php: L1026
at acf_form_head()
// load acf scripts
//acf_enqueue_scripts();
}
commented out act_enqueue_scripts();