modify

src/be/database/migrations/2023_09_27_035029_create_surveys_table.php

             $table->string("line_user_id")->comment("填寫人Line UID");
             $table->string("head_sticker")->comment("填寫人頭貼");
             $table->string("nickname")->comment("暱稱");
-            $table->string("filler_content")->comment("問卷填寫內容");
+            $table->text("filler_content")->comment("問卷填寫內容");
             $table->timestamps();
         });
     }