It seems like the error is triggering due to USP using the exif to generate the title on submit.
here is that line in media.php
// Use image exif/iptc data for title and caption defaults if possible.
} elseif ( 0 === strpos( $type, ‘image/’ ) && $image_meta = @wp_read_image_metadata( $file ) ) {
if ( trim( $image_meta[‘title’] ) && ! is_numeric( sanitize_title( $image_meta[‘title’] ) ) ) {
$title = $image_meta[‘title’];
}
on submit, white screen of death… not even admin bar remains.
