Sudden "Error fetching fields" in Kibana

Hi everyone, I'm suddenly getting an error in Kibana "error fetching fields"
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Any ideas in what the cause of this would be and how to fix it?

Hi Michiel,

What version are you on? Are there any Kibana logs which you can share. What was the action being done when you hit this error. Please share more info.

Also, it would be helpful to see what the request looks like using your browser's debugger.

Thanks
Rashmi

Hi Rashmi, sorry for the late reply. It was caused because I activated APM apparently, but it's not being used...

Am glad you could find the root cause.

Cheers
Rashmi