Hello ,
Getting this exception "com.thoughtworks.xstream.mapper.CannotResolveClassException: html" when I try to run the Load test from Performance Center version 12.53 and below is the details stack

Building in workspace C:\Program Files (x86)\Jenkins\workspace\New_PC
ma 08.13.2018 at 10:45:28 AM CEST - plugin version is '5.4.3-beta-SNAPSHOT'
ma 08.13.2018 at 10:45:28 AM CEST -

• - -
  Test description: New_PC
  ma 08.13.2018 at 10:45:28 AM CEST - Validating parameters before run
  ma 08.13.2018 at 10:45:28 AM CEST - OK
  ma 08.13.2018 at 10:45:28 AM CEST - Trying to login
  [PCServer='http://mypchostname/loadtest/General/Login.aspx?logout=1', User='myusername']
  ma 08.13.2018 at 10:45:28 AM CEST - Login succeeded
  ma 08.13.2018 at 10:45:28 AM CEST -
  Executing Load Test:
  ====================
  Test ID: 53
  Test Instance ID: 11
  Timeslot Duration: 0:30(h:mm)
  Post Run Action: Collate Results
  Use VUDS: true
  ====================

ma 08.13.2018 at 10:45:28 AM CEST - com.thoughtworks.xstream.mapper.CannotResolveClassException: html
ma 08.13.2018 at 10:45:28 AM CEST - Logout succeeded
ma 08.13.2018 at 10:45:28 AM CEST - Empty Results
ma 08.13.2018 at 10:45:28 AM CEST - Result Status: FAILURE

• - -
  Build step 'Execute performance test using Performance Center' changed build result to FAILURE
  Finished: FAILURE