I have been struggling with this error for the last two days. I have 5 suggestionboxes on my page, and at different times if I use the suggestionboxes one of the components will throw a entitymanager is null exception. I have tried to add eventqueue, requestdelay, and timeout to all my suggestionboxes. I have also increased my concurrent-request-timeout to 10000, however, the error occurs every time after using the page. Any help would be appreciated as I am having problems finding anyone with a similar error.