I have here a few days young KDE Neon 5.10. Migrated my home completely from Kubuntu 16.04 (with KDE PPA). So i was very proud that i see the Autokompletion in Kmail working fine. So i enter something in "to:" and it shows me the entries from the Nexcloudadressbook.
Same nice Thing in Krunner. Enter some name, and it will show you an contact.

So, but last day i've deleted my baloodb. Then the index was reinitializes. But since this action, no kontacts in krunner and for autocompletion, so what can i do?

Thanks a lot

Supplement: When i edit existing Contacts once, i'am able to call that in the krunner. Same with new contacts and autocompletion.