fix

app/Http/Controllers/Api/NewsController.php

         $locate = $locale == "tw" ? "zh_TW" : $locale;
         $news = News::find($id);
         $otherNewsList = [];
-
+        if(!$news){
+            return response()->json([
+                'message' => "news not found"], 404);
+        }
         //取得前一篇
         $previous = News::where(function ($query) use ($news) {
             $query->where('order', $news->order)
             "id" => $next->id,
             "categoryId" => $next->newsCategory->id,
             "category" => $next->newsCategory->getTranslation("name", $locate, false),
-            "postDate" => Carbon::parse($previous->post_date)->format("Y/m/d"),
+            "postDate" => Carbon::parse($next->post_date)->format("Y/m/d"),
             "title" => $next->getTranslation("title", $locate, false),
             "imgPC" => $next->news_img_pc_url,
             "imgMobile" => $next->news_img_mobile_url,
             "description" => $next->getTranslation("description", $locate, false),
         ];
 
-
-        // {
-        //     "type": "text",
-        //     "content": ""
-        // },
-        // {
-        //     "type": "image",
-        //     "images":[{"img_url":"", "alt":""}, {"img_url":"", "alt":""}]
-        // },
-        // {
-        //     "type": "video",
-        //     "is_yt":false,
-        //     "video_img_url":"",
-        //     "video_url":"",
-        //     "content": ""
-        // }
         $paragraphs = [];
         foreach($news->paragraphs as $paragraph){
             $content = [];
             "metaKeyword" => $news->getTranslation("meta_keyword", $locate, false),
             "metaDesc" => $news->getTranslation("meta_description", $locate, false),
             "metaImg" => $news->meta_img,
-            "paragraphs" => $paragraphs,
-            "otherNews" => $otherNewsList
+            "paragraphs" => $paragraphs
         ];
+        if(!empty($otherNewsList)) $result["otherNews"] = $otherNewsList;
         return response()->json(["data" => $result], 200);
     }
 }

database/migrations/2025_05_20_043733_create_news_table.php

             $table->json('title')->comment("標題");
             $table->json('description')->comment("短文");
             $table->json('written_by')->comment("編輯人");
-            $table->dateTime('post_date')->comment("文章發布日");
+            $table->date('post_date')->comment("文章發布日");
             $table->string('meta_img')->nullable()->comment('seo image');
             $table->json("meta_title")->nullable()->comment("seo title");
             $table->json("meta_keyword")->nullable()->comment("seo keyword");