lets c

layouts/events/single.html

           <!-- <li class="list-inline-item"><a href="{{ `author/` | relLangURL }}{{ .Params.Author | urlize }}/">{{ .Params.Author }}</a></li> -->
           <li class="list-inline-item">{{ dateFormat "Monday, Jan 2, 2006" .Params.event_start_date }}</li>
         </ul>
-        {{ if (isset .Params.Image) }}
+        {{ if (isset .Params "image") }}
         <img class="img-fluid mb-50 lozad" data-src="{{ .Params.Image | absURL }}" alt="blog-image">
         {{end}}
       </div>

layouts/events/upcoming.html

 <article class="col-lg-4 col-md-6 col-12 clearfix wow fadeInUp mb-4" data-wow-duration="500ms">
     <div class="post-block">
       <div class="media-wrapper">
-        {{ if (and (isset .Params.Image_webp) (isset .Params.Image)) }}
+        {{ if (and (isset .Params "image_webp") (isset .Params "image")) }}
           <img class="img-fluid lozad" data-src="{{ .Params.Image_webp | absURL }}"
           onerror="this.onerror=null;
           this.src='{{ .Params.Image | absURL }}'"