I am creating a custom module named Flip Box ( https://ultimate.brainstormforce.com/flip-box/ ), for which I need your default icon set. I have created a icon field using
FLBuilder::register_settings_form( ‘icon_form_field’, array( /entire array/ ) );
This has all the fields from your Icon module plus few extra fields that I needed. The icon field is not mandatory to be selected, thus when I do not select the icon for the flip-box it shows me a warning. Refer - http://vrunda.sharkz.in/bb-flip-box/
I’ve reviewed the error and the code where it’s happening but I’m not sure what’s going on. Would it be possible to get a copy of your module, or temporary FTP access to your site to test?