For quite some time now, I've been trying to sort out the cause of a problem with the [eab_expired] and [eab_archive] shortcodes for Events+. This issue and a couple others finally inspired the massive plugin conflict test I've been working on for two weeks. And at last, I think I have found the culprit!
My site is stripped down to no plugins except the WPMUDEV dashboard and Events+. The page where I display events using those shortcodes works fine....until I activate SmartCrawl.
Then I get nothing but the page title.
Here is the error in apache.log (there is no error in WP debug.log):
[Sat May 27 19:36:59.797146 2017] [:error] [pid 6515] [client 184.108.40.206:38828] PHP Fatal error: Call to undefined method Eab_ArchivedCollection::get_timestamp() in /var/www/html/wp-content/plugins/events-and-bookings/lib/class_eab_collection.php on line 312, referer: http://220.127.116.11/resources/wp-cron.php?doing_wp_cron=1495913819.7116301059722900390625