Core in processor plugin

Hello,
The following piece of configuration makes Telegraf to core. Latest CentOS 8 and Telegraf. The same configuration works in 1.13.

[[processors.converter]]

[processors.converter.fields]
	unsigned  =  [
		"field1"
	]

telegraf_core.txt (1.9 KB)

Hello,
Is there any update? I manage to replicate the issue on CentOS7 also.

$ telegraf --config telegraf.conf
2020-10-14T09:54:56Z I! Starting Telegraf 1.15.3
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0x1f94444]

goroutine 98 [running]:
github.com/influxdata/telegraf/plugins/processors/converter.(*Converter).convertFields(0xc0006d58f0, 0x2f59f00, 0xc00051ec40)
/go/src/github.com/influxdata/telegraf/plugins/processors/converter/converter.go:291 +0x6e4
github.com/influxdata/telegraf/plugins/processors/converter.(*Converter).Apply(0xc0006d58f0, 0xc0000a0e70, 0x1, 0x1, 0xc0000a0e50, 0xc000237cc0, 0x1)
/go/src/github.com/influxdata/telegraf/plugins/processors/converter/converter.go:86 +0x9c
github.com/influxdata/telegraf/plugins/processors.(*streamingProcessor).Add(0xc00000f060, 0x2f59f00, 0xc00051ec40, 0x2f4aea0, 0xc000116040, 0x1, 0x101)
/go/src/github.com/influxdata/telegraf/plugins/processors/streamingprocessor.go:35 +0x81
github.com/influxdata/telegraf/models.(*RunningProcessor).Add(0xc0002006f0, 0x2f59f00, 0xc00051ec40, 0x2f4aea0, 0xc000116040, 0x0, 0x0)
/go/src/github.com/influxdata/telegraf/models/running_processor.go:95 +0x106
github.com/influxdata/telegraf/agent.(*Agent).runProcessors.func1(0xc0006e6030, 0xc000591000)
/go/src/github.com/influxdata/telegraf/agent/agent.go:559 +0x156
created by github.com/influxdata/telegraf/agent.(*Agent).runProcessors
/go/src/github.com/influxdata/telegraf/agent/agent.go:554 +0x90

Can confirm also, the issue is not presented in 1.14.5. Any feedback would be appreciated.