How to remove the separator between values of a multi value field in a Views result? I'm working on a D8 project. I have a webform with multiple fields and one of those is a taxonomy term. The taxonomy term consist of the title and a file upload field. The admin uploads a file in the taxonomy, and in the webform selects which file/s should be visible to the end user.

In order to display those files to the user I created a webform submission view where I get the specific field. The point is that the field might return multiple values (taxonomy terms) which are separated by comma. 

How can I remove that comma? In D7 you could choose the separator in mulivalue field but now I can't find something similar. 

EDIT: 
The last idea was to change the output in the template file.
So in views-view-field.html.twig I try to replace the comma with space in the  output of the field.

{% set output = output|replace({(',') : (' '),}) %}


What I get is the html of the view with a lot of debug informations but the view is not rendered as it should.
I get something like &lt;!-- THEME DEBUG --> &lt;!-- THEME HOOK: 'webform_element_base_html' --> &lt;!-- FILE NAME SUGGESTIONS: * 

Any idea why?
Finally, I found the solution. I'm not sure if is the best, but it works.

function MY_THEME_preprocess_views_view_field(&amp;$variables){
  $view = $variables['view'];

  if ($view-&gt;id() == 'VIEW_ID'){
    $output = str_replace(',', '', $variables['output']);
    $variables['output'] = \Drupal\views\Render\ViewsRenderPipelineMarkup::create($output);
  }
}