SSP #match directives with appear broken

[nrinaudo]

Describe the bug
Trying to run a very basic pattern match, I get a multi-screens long error message.

To Reproduce
Have the following template:

<%
  var customer = ("Gold", 1)
%>

#match(customer._1)
#case("Gold") Great stuff
#otherwise Bad stuff
#end

This is being executed with the following code:

import org.fusesource.scalate.TemplateEngine

object Run extends App {
  val sourceDataPath = new java.io.File("./src/main/resources/sample.ssp").getCanonicalPath
  val engine         = new TemplateEngine

  val result = engine.layout(sourceDataPath)
  println(result)
}

Expected behavior
I would expect to see the Great stuff string printed.
I'm seeing a massive error message instead, whose salient point appears to be:

[error] org.fusesource.scalate.TemplateException: assertion failed: 
[error]   No RuntimeVisibleAnnotations in classfile with ScalaSignature attribute: package object util
[error]      while compiling: /tmp/scalate-8794168128220690575-workdir/src/home/nrinaudo/dev/jpm/templates/src/main/resources/sample.ssp.scala
[error]         during phase: globalPhase=patmat, enteringPhase=parser
[error]      library version: version 2.12.16
[error]     compiler version: version 2.12.16

Desktop (please complete the following information):

• OS: Ubuntu
• Browser N/A
• Version 1.9.8 (assuming this is the scalate version we're talking about)