Hi,
Thank you so much for your answer. You gave me the key. The problem was in a recurrent event (every month) where the start and the end date and time were the same. I used it just as a reminder. I fixed it by changing the end time. Because of being a monthly event I hadn’t this error when I configured the plugin for the first time. The event wasn’t on that week. Maybe you want to update the code to avoid this.
Kind regards