SELECT * FROM oc_clndr_objects WHERE calendardata NOT LIKE '%END:VCALENDAR%';
Reason/cause
utf8_bin collation from oc_clndr_objects does not support supplementary characters. So while saving the object to ‚calendardata‘ …. END:VCALENDER
about utf8mb4 http://stackoverflow.com/questions/30074492/what-is-the-difference-between-utf8mb4-and-utf8-charsets-in-mysql
