Issue #3326280: Updating to 1.2.0 fails with Argument Argument #1...

Issue #3326280: Updating to 1.2.0 fails with Argument Argument #1 ($processorCookiePolicyUrl) must be of type string, null given

Closes #3391523

templates/cookies-docs-service.html.twig

 {% set classes = ['cookies-docs-service'] %}
 {% set HideProcessorDetails = (processor is empty) and (processorContact is empty) and (processorContact is empty) and (processorUrl is empty) and (processorPrivacyPolicyUrl is empty) and (processorCookiePolicyUrl is empty) %}
 
-<article{{attributes.addClass(classes)}}>
+<article{{attributes.setAttribute('id', id|clean_class).addClass(classes)}}>
   <h3>{{ label }}</h3>
   {% if processorCookiePolicyUrl %}
     <div class="cookies-docs-service__website"></div>