Non-descriptive TSVB error: [tsvb] >

[alexfrancoeur]

Kibana version: 7.8 (but also earlier)

Original install method (e.g. download page, yum, from source, etc.): Cloud

Describe the bug: Non-descriptive TSVB error

Steps to reproduce:

1. Create TSVB visualization (time series, top N, metric, etc.)
2. Use ES aggregations and "special" aggs such as filter ratio
3. Add to dashboard
4. Throw lots of data at it
5. Blank visualization and non-descriptive error

Expected behavior:
Either no error, or more details

Screenshots (if relevant):

I'm not sure if it's the same error, but feels related to #57327

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[timroes]

No matter what error it is (unless it's a network error which we usually can't handle better): this should print a proper error message :-)

[alexfrancoeur]

Let me know if you need to see live, I can reproduce very regularly

[VladLasitsa]

Let me know if you need to see live, I can reproduce very regularly

@alexfrancoeur, I would like to see live, if you have a time.