GroovyRuntimeException on working switch

Hello! Although this is not an issue, it caugh my attention and wanted to get your opinion on whether this is something I should look into.

While writing a new SmartApp, I was monitoring logs and ran across the following error while the hub polls this specific device. Note that this device is not related at all to the SmartApp I was testing.

WARN: Exception ‘groovy.lang.GroovyRuntimeException: Ambiguous method overloading for method java.lang.Integer#plus. Cannot resolve which method to invoke for [null] due to overlapping prototypes between:
[class java.lang.Character]
[class java.lang.String]
[class java.lang.Number]’ encountered parsing ‘cmd: 7205, payload: 00’

Jasco device seems to work just fine.

Thoughts? Thanks in advance.