Cannot read property 'isZabbix54OrHigher' of undefined when creating a variable template query

[mjtrangoni]

Describe the bug
Having other datasources configured in parallel to Zabbix, and trying to create a Template variable for that other datasource results in a Grafana crash which "unexpected error happened".

I would say this needs to be fixed ASAP as it is affecting other plugins as well.

Expected behavior
I expect to create a Template Variable for other plugins when having the Zabbix Plugin enabled.

Screenshots

An unexpected error happened
DetailsTypeError: Cannot read property 'isZabbix54OrHigher' of undefined

    at t (https://grafana.xxx/public/plugins/alexanderzobnin-zabbix-app/datasource-zabbix/module.js:1:122220)
    at div
    at div
    at div
    at u (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:232396)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:233106)
    at div
    at div
    at u (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:232396)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:233106)
    at div
    at div
    at u (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:232396)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:233106)
    at _ (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:747:6621)
    at E (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:73696)
    at div
    at div
    at u (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:232396)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4694:233106)
    at form
    at div
    at Y (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:266:4329)
    at E (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:73696)
    at div
    at Ne (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:288:1831)
    at E (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:73696)
    at div
    at div
    at div
    at div
    at div
    at t (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:852951)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:5755:36473)
    at div
    at mn (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:301:189)
    at div
    at E (https://grafana.xxx/public/build/DashboardPage.8ea303538f79ee32b68a.js:432:994)
    at DashboardPage
    at E (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:73696)
    at n (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:545060)
    at si (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:5946:3239)
    at t (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:1380749)
    at t (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:1382794)
    at main
    at t (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:1377354)
    at div
    at da (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:3492:1227)
    at h (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:5753:20211)
    at pl (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4169:682)
    at hl (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:4169:972)
    at l (https://grafana.xxx/public/build/vendors~app.8ea303538f79ee32b68a.js:2:71604)
    at Ni (https://grafana.xxx/public/build/app.8ea303538f79ee32b68a.js:5959:421)

Software versions

Grafana	Zabbix	Grafana-Zabbix Plugin
8.1.2	5.0.11	4.2.2

[alexanderzobnin]

Confirmed.

[alexanderzobnin]

That's pretty strange. Issue happens when you switch variable editor from zabbix data source to another. It may happen if you have zabbix data source enabled as a default. When data source switched, for some reason Grafana tries to render zabbix variable query editor, but passes the new data source as a param. As a result, error happens, since another data source does not have zabbix property.

As a workaround, I can suggest to uncheck default flag on Zabbix data source to prevent zabbix variable editor loading when you create a new variable.

[mjtrangoni]

@alexanderzobnin thank you! Do you have an ETA for the next minor release?

[alexanderzobnin]

I'm not 100% sure, but it should not be late than end of Sep.