Telegraf helmchart: error parsing mqtt_consumer, adding parser failed: line 59: cannot unmarshal TOML table into []xpath.Config (need struct or map

Hi,

I'm trying to configure Telegraf using the values.yaml file. Part of the configuration is a [[inputs.mqtt_consumer.xpath]] block in the mqtt_consumer:

[[inputs.mqtt_consumer.xpath]]
timestamp = "/timestamp"
timestamp_format = "unix"
tag_selection = "/tags/*"
field_selection = "/fields/*"

In the values.yaml file I translated this to:

xpath:
timestamp: "/timestamp"
timestamp_format: "unix"
tag_selection: "/tags/*"
field_selection: "/fields/*"

Unfortunately this gives me the following error:

Telegraf helmchart: error parsing mqtt_consumer, adding parser failed: line 59: cannot unmarshal TOML table into []xpath.Config (need struct or map)

Start with the chart's values.yaml and the mqtt_consumer configuration templating, tracing how the xpath block is rendered into Telegraf configuration. Verify that the rendered configuration represents the repeated xpath entries expected by Telegraf, then confirm the chart installs without the reported TOML unmarshalling error.

Written by the indexing model from the issue text.