Smush excess meta data for image

Hello,

On line 198 in html for this page, view-source:https://www.wrmeadows.com/concrete-vapor-barriers/ - can't figure out why i have all this meta data for this image:

data-image-meta="{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}"

Full:

<p><img data-attachment-id="7553" data-permalink="https://www.wrmeadows.com/vapor-barrier-pdf/" data-orig-file="https://www.wrmeadows.com/wp-content/uploads/vapor-barrier-pdf.jpg" data-orig-size="40,41" data-comments-opened="1" data-image-meta="{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}" data-image-title="Vapor Barrier PDF" data-image-description="" data-medium-file="https://www.wrmeadows.com/wp-content/uploads/vapor-barrier-pdf.jpg" data-large-file="https://www.wrmeadows.com/wp-content/uploads/vapor-barrier-pdf.jpg" src="https://www.wrmeadows.com/wp-content/uploads/vapor-barrier-pdf.jpg" alt="Vapor Barrier White Paper" title="Vapor Barrier White Paper" width="40" height="41" class="alignleft size-full wp-image-7553" />White Paper: Under Slab Vapor Barriers/Retarders</p>

I have smush set up to ignore exif data.

Thanks for your help.