After updating from 6.3.2 to 6.4.0 it seems that the Kibana APM app doesn't show any services. The message is "Looks like you don't have any services with APM installed. Let's add some!"
There is definitely data coming to the apm-* index from the APM server and agents. Also the setup instruction checks show "You have correctly setup APM-Server" and "Data successfully received from one or more agents".
I even tried clearing all APM related data from elasticsearch and Kibana.
Looks like dashboards like "[APM] Services" show correctly the running services.
Sorry about the troubles upgrading. The 6.4 APM UI introduced some optimizations to speed up queries, following from changes to the default configuration in apm-server 6.3. There are two options to get the APM UI going again:
Update apm-server.yml to split event types into separate indices:
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