Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

via by Unknown author, 2 years ago
via Scala JIRA by James Iry, 1 year ago
via YouTrack by Unknown author, 2 years ago
java.lang.IllegalArgumentException: Flat hash tables cannot contain null elements. at scala.collection.mutable.FlatHashTable$HashUtils$class.elemHashCode(FlatHashTable.scala:348) at scala.collection.mutable.HashSet.elemHashCode(HashSet.scala:41) at scala.collection.mutable.FlatHashTable$class.containsEntry(FlatHashTable.scala:109) at scala.collection.mutable.HashSet.containsEntry(HashSet.scala:41) at scala.collection.mutable.HashSet.contains(HashSet.scala:57)