Problem with holiday extention - style is null

Hello dear xwiki people.

I just did a fresh install of xwiki a few days ago (running as a docker container on a Synology) and found the holiday request extension which I was excited to try out, but sadly I can not get arround the error:

Cannot invoke “String.toUpperCase()” because “style” is null.

I thought it has something to do with my date format under localization, which is: dd/MM/yyyy, but it didnt matter if I changed it or the code written in the extension. I wanted to try to disable the protection to see if thats the issue, but wasn’t able to do that either.

Maby someone here has idea how I could tackle this. THANKS!

Paul

The Velocity code on the page that gives the error when I try to open a new holiday request is:

{{include document="AppWithinMinutes.DynamicMessageTool" context="new" /}}

{{velocity}}
$xwiki.ssx.use("HolidayRequest.SkinExtension")
## Load the User Picker style for the Employee and Manager columns
#set($discard = $xwiki.ssfx.use('uicomponents/widgets/userpicker/userPicker.css'))
#if ($request.createHR == 'true')
  #set($count = $doc.getValue('count'))
  #set($defaultDateStyle = 'medium')
  #set($title="Request_$datetool.format('yyyy-M-d H:m:s',$datetool.getDate())")
  #set($newHRReference = $services.model.createDocumentReference('', 'HolidayRequest', $title))
  $response.sendRedirect($xwiki.getURL($newHRReference, 'edit', "$!{request.queryString}&title='New Holiday Request'"))
#end
#if($isGuest)
  $msg.get('contrib.hr.guest')
#else
{{html wiki="true"}}
  <form action="" id="newHR">
  <div>
    <input type="hidden" name="parent" value="HolidayRequest.WebHome" />
    <input type="hidden" name="template" value="HolidayRequest.HolidayRequestTemplate" />
    <input type="hidden" name="createHR" value="true" />
    <span class="buttonwrapper">
      <input class="button" type="submit" value="$msg.get('contrib.hr.new.submit')" />
    </span>
  </div>
  </form>
{{/html}}
#end
#set($originalMsg = $msg)
#set($msg = $services.dynamicMessageToolFactory.createDynamicMessageTool($msg, {
  'holidayrequest.livetable.employee': $msg.get('contrib.hr.WebHome.employee'),
  'holidayrequest.livetable.startDate': $msg.get('contrib.hr.WebHome.startDate'),
  'holidayrequest.livetable.endDate': $msg.get('contrib.hr.WebHome.endDate'),
  'holidayrequest.livetable.manager': $msg.get('contrib.hr.WebHome.manager'),
  'holidayrequest.livetable.numberDays' : $msg.get('contrib.hr.numberDays'),
  'holidayrequest.livetable.office' : $msg.get('contrib.hr.office'),
  'holidayrequest.livetable.comment' : $msg.get('contrib.hr.comment'),
  'holidayrequest.livetable.status': $msg.get('contrib.hr.WebHome.status')
}))

#set($columnsProperties = {
  '_action': {'type': 'none', 'link' : 'view'},
  'employee': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true, 'link' : 'view'},
  'startDate': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  'endDate': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  'numberDays': {'type': 'number', 'size':10, 'filterable':true, 'sortable':true, 'html': true},
  'manager': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  'status': {'type': 'list', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  'office': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  'comment': {'type': 'text', 'size': 10, 'filterable': true, 'sortable': true, 'html': true},
  '_actions': {'sortable': false, 'filterable': false, 'html': true, 'actions': ['edit', 'delete']}
})
#set($options = {
  'className': 'HolidayRequest.HolidayRequestClass',
  'resultPage' : 'AppWithinMinutes.LiveTableGenerator',
  'translationPrefix': 'holidayrequest.livetable.',
  'tagCloud': true,
  'rowCount': 15,
  'maxPages': 10,
  'selectedColumn': 'startDate',
  'defaultOrder': 'desc'
})
#set($columns = ['_action', 'employee', 'startDate', 'endDate', 'numberDays', 'manager', 'office', 'comment', 'status', '_actions'])
#livetable('holidayrequest' $columns $columnsProperties $options)
#set($msg = $originalMsg)

#if(!$isGuest)
{{html wiki="true"}}
<form action="Summary" id="overview" style="display:inline;">
  <span class="buttonwrapper">
    <input class="button" type="submit" value="$msg.get('contrib.hr.summary')" />
  </span>
</form>
<form action="Calendar" id="overview" style="display:inline;">
  <span class="buttonwrapper">
    <input class="button" type="submit" value="$msg.get('contrib.hr.calendar')" />
  </span>
</form>
{{/html}}
#end
{{/velocity}}

​The Full Error I attached to this post - I hope this helps.
full_wiki_error.txt (30.4 KB)

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