Hi, I'm getting this error when trying to train this LDA template:
https://github.com/PredictionIO/template-scala-topic-model-LDA I can build OK but when I try and train I get this error: Exception in thread "main" java.lang.NoSuchMethodError: scala.runtime.IntRef.create(I)Lscala/runtime/IntRef; at scopt.OptionParser.parse(options.scala:370) at org.apache.predictionio.workflow.CreateWorkflow$.main(CreateWorkflow.scala:137) at org.apache.predictionio.workflow.CreateWorkflow.main(CreateWorkflow.scala) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731) at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181) at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) I can successfully deploy (build. train & deploy) the exact same upgraded LDA template to Heroku using this <https://github.com/heroku/predictionio-buildpack> buildpack. Using a PSQL backend for Event Storage & I followed the instructions for upgrading pio here <https://predictionio.incubator.apache.org/install/install-sourcecode/>. Can't seem to find much literature on this type of error .... anyone come across this before? Thanks
