The editor didn't load at this time on Kubernetes

[Ahmed Attya]

I installed Confluence on Kubernetes cluster using Atlassian Helm Chart. and I enabled collaborative editing in values.yaml file

confluence is started normally but I tried to test it is failed and print this error: 

The editor didn't load at this time

but when i disable collaborative from UI, this error disappear..

any help?

thanks

[Ahmed Attya]

Note1:
i checked from broswer

<confluence-base-url>/rest/synchrony-interop/status

  it gives this output:
{"sharedDraftsEnabdel":true}
and documentation sayes:

{
 "synchronyEnabled": true,
 "sharedDraftsEnabled": true
}

Note2:
I checked 

<confluence-base-url>/synchrony/heartbeat from browser is OK! but from inside confluence pod it gives name not resolved

[Ahmed Attya]

note3: i checked from browser

<confluence-base-url>/rest/synchrony-interop/synchrony-status

its running

[Yevhen]

You need to fix DNS resolution problem in your cluster. Both server and client (UI) use the same synchrony URL.