After a search I think I’ve found the solution here. https://theeventscalendar.com/support/forums/topic/next-event-widget-no-longer-showing-full-event-details/
But!
As I don’t like messing with things I can’t fix, I would rather be sure what it is I’m changing first. What is it I’m changing to the_content(); is it everything posted below??
$content = apply_filters(‘the_content’, strip_shortcodes( $post->post_content ));
$content = str_replace(‘]]>’, ‘]]>’, $content);
echo wp_trim_words( $content, apply_filters( ‘excerpt_length’, 55 ), apply_filters(‘excerpt_more’, ‘ ‘ . ‘[…]’) );