Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

src/layouts/entry-page/entry-page.vue

@@ -279,22 +279,27 @@ export default {
                 }
             },            
             formatToYYYYMMDD(dateString) {
-                var returnValue = null;
-
                 try {
-                    // Avoid any UTC / local time issues by always treating the input and output as UTC.
+                    if (!dateString) {
+                        return null;
+                    }
+
+                    // Avoid any UTC / local time issues by always treating the output as UTC.
                     const date = new Date(dateString);
+                    if (Number.isNaN(date.getTime())) {
+                        return null;
+                    }
 
                     const year = date.getUTCFullYear();
                     const month = String(date.getUTCMonth() + 1).padStart(2, "0");
                     const day = String(date.getUTCDate()).padStart(2, "0");
 
-                    returnValue = `${year}-${month}-${day}`;
+                    return `${year}-${month}-${day}`;
                 } catch ( error ) {
                     global.$logger.logError(`[Entry Page] Error formatting date string: ${error} - Input: ${dateString}`);
+                    return null;
                 }
-
-                return returnValue;
+            }
             }
         }
 };