Greetings,
We recently upgraded Grafana from 5.1.3 to 6.7.2. The process was very easy but some of our dashboards now display a rendering error. TypeError: Cannot read property ‘slice’ of undefined.
I have searched to no avail to find a solution to this. Can anyone help please?
Many Thanks
Richard
We have the same issue.
We use multi status panel(Vonage). the panel cannot display anything after upgrade to 6.7.3.
Can someone help? Thanks in advance.
We had to settle for an upgrade to 6.6. The issue did not occur until 6.7.
Also faced that issue. In our case its happened with boolean values in InfluxDB. In Grafana v6.4.1 everything is ok.
Have the same issue after upgrading to 7.0.3. It seems to be happening on plugins that is not signed by Grafana. I’ve even put in the line with allow_loading_unsigned _plugins.
On those dashboards it is default datasource, when changing to correct datasource I get this error.
@ksanajoe - same here, that status Panel(Vonage) is pretty broken for us. Anyone know if someone from Grafana can help (unlikely given that it’s a 3rd party panel) or is someone from Vonage themselves able to help. 
A real shame because that panel was a perfect fit for some of our use cases.
(We’re running 6.7.4 at the moment, but a jump to 7 shortly is on the cards. We only migrated from 5.x in the last two weeks)