Log Reader Returning JaxbConversionException error

Has anyone gotten the following error (or similar) for the systemlogsrecordtypesource function? It's for the the Log Reader plugin.

Expression evaluation error at function 'systemlogsrecordtypesource' [line 7]: The passed parameter(s) are of the wrong type. Received the type com.appiancorp.common.xml.JaxbConversionException: JAXB failure trying to convert typed value TypedValue[it=1474,v={TypedValue[it=1478,v=<null>],TypedValue[it=1154,v=<null>],{1,20,<null>}}] to java class com.appiancorp.common.query.Query.

It's a simple few lines of code:

systemlogsrecordtypesource( a!query( pagingInfo: a!pagingInfo(startIndex: 1, batchSize: 20) ) )

Strangely, I cannot replicate this across environments. I've confirmed the environments are on the same version of Appian, so I am unsure what to check for next.

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