Fix url preview

Author: cp-sumi-k

admin/src/api/post/content-types/post/lifecycles.js

@@ -271,7 +271,7 @@ async function generatePreview(event) {
                 -webkit-box-orient:vertical;
               "
             >
-              ${data.title || ""}
+              ${data?.title || ""}
             </h2>
             <div style="margin-top: 8px">
               <h3
@@ -287,7 +287,7 @@ async function generatePreview(event) {
                   -webkit-box-orient:vertical;
                 "
               >
-                ${data.description || ""}
+                ${data?.description || ""}
               </h3>
             </div>
             <div>
@@ -302,14 +302,14 @@ async function generatePreview(event) {
                   text-overflow: ellipsis;
                 "
               >
-                ${data.domain || ""}
+                ${data?.domain || ""}
               </p>
             </div>
           </div>
           <div style="width: 160px">
             <div
               style="
-                background-image: url('${data.img || ""}');
+                background-image: url('${data?.img || ""}');
                 background-position: 50% 50%;
                 height: 167px;
                 width: 160px;