Ok, so i found out how to resolve this.
– Download the missing poster and place it in the wp-content/uploads/imdbcache folder.
– Give the poster the “imdbmovieid” as a title.
– Open the txt file generated for the movie in the same folder.
– Where it says Poster”:”N/A” replace N/A with a direct link to the poster on your site.
Problem solved ??
