Hi Evgeniya,
Unfortunately, we’ll need logs to figure out what the problem may be. You can find more details about uploading log files here: https://docs.couchbase.com/server/6.0/cli/cbcollect-info-tool.html
I can help further after looking at the logs. Alternatively, we can share a tool that resets all eventing definitions if you’d like to start over. If you need this tool, please let us know.
Thank you,
Siri