Exception "java.lang.RuntimeException: java.lang.IllegalStateException: Request is not an instance of io.undertow.servlet.spec.HttpServletRequestImpl" appears on Fuse logs

Solution Verified - Updated -

Issue

  • When entering in Hawtio console, a blank page appears, instead of the expected login form.
  • The following message appears on the log file:
java.lang.RuntimeException: java.lang.IllegalStateException: Request is not an instance of io.undertow.servlet.spec.HttpServletRequestImpl, it is an instance of com.dynatrace.agent.introspection.uem.impl.CacheHookingRequestWrapper, loaded from javax.servlet-api [42], revision: javax.servlet-api [42](R 42.0)

Environment

  • Fuse 7.x
  • Dynatrace agent installed

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