Hello. One of my accounts stopped getting new messages. It stopped on one message and for few days I`m getting this message several times. It apears as new again and again.I have found this on error console :

"2019-02-15 12:06:38	gloda.index_msg	WARN	Observed header that claims to be gloda indexed but that gloda has never heard of during compaction. In folder: mailbox://ppasik@poczta.o2.pl/Inbox sketchy key: 26264 subject: Banner Kebab w Dekadzie myślenickiej"

There is hundreds of such messages in this console. What is wrong? Thanks for help. Pawel