error: bad symbolic reference. A signature in Imports.class refers to term global in class scala.tools.nsc.interpreter.IMain which is not available. It may be completely missing from the current classpath, or the version on the classpath might be incompatible with the version used when compiling Imports.class. error: bad symbolic reference. A signature in Imports.class refers to term memberHandlers in class scala.tools.nsc.interpreter.IMain which is not available. It may be completely missing from the current classpath, or the version on the classpath might be incompatible with the version used when compiling Imports.class. two errors found