Out of range exception from NTVS REPL

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Description

<entry>
    <record>774</record>
    <time>2019/04/23 20:51:04.396</time>
    <type>Error</type>
    <source>Editor or Editor Extension</source>
    <description>System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.&#x000D;&#x000A;Parameter name: index&#x000D;&#x000A;   at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)&#x000D;&#x000A;   at Microsoft.NodejsTools.Repl.ReplOutputClassifier.GetClassificationSpans(SnapshotSpan span)&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Classification.Implementation.ClassifierTagger.&lt;GetTags&gt;d__5.MoveNext()&#x000D;&#x000A;   at Microsoft.VisualStudio.Text.Tagging.Implementation.TagAggregator`1.&lt;GetTagsForBuffer&gt;d__39.MoveNext()&#x000D;&#x000A;--- End of stack trace from previous location where exception was thrown ---&#x000D;&#x000A;   at Microsoft.VisualStudio.Telemetry.WindowsErrorReporting.WatsonReport.GetClrWatsonExceptionInfo(Exception exceptionObject)</description>
  </entry>

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