ekd

Found that the line 295 causing the error message is:

function is_vertical($url) {

Have now downloaded Duotone 1.0.1 twice (deleted first download, downloaded and installed again), and still have error message:

Warning: Missing argument 1 for is_vertical() in /homepages/13/d300699809/htdocs/journal/wp-content/themes/duotone/inc/duotonelibrary.php on line 295

Have gone into the duotonelibrary.php file and all is correct as suggested in fixes above:
$width = (is_vertical($post->image_url)) ? MIN_WIDTH : MAX_WIDTH;

Have actually searched for the string
Missing argument 1 for is_vertical()
and that text cannot be found.

Thoughts, help?
See page at
https://ekingdesign.com/journal