Failed to load resource: the server responded with a status of 500 ()

[nithin5127]

Describe the bug
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Expected behavior
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Screenshots
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Network data
If it's related to metric data visualization would be great to get the raw query and response for the network request (check this in browser dev tools network tab, there you can see metric requests, please include the request body and request response)

Software versions

Grafana	Zabbix	Grafana-Zabbix Plugin
x.x.x	x.x.x	x.x.x