音声アーカイブにPlaceHolder追加。

public_new/js/chat-ui.js

@@ -1682,7 +1682,7 @@ CHAT_UI.refreshArchiveDetailScreen = function(archiveId) {
         case "2": // 音声
         case 2:
             $('#archive_player').prepend('<audio class="archive_audio_player" src=' + archiveFilePath + ' controls></audio>');
-            $('#archive_player').prepend('<img class="archive_player" src=' + "https://via.placeholder.com/1280x720" + ' />');
+            $('#archive_player').prepend('<img class="archive_player" src=' + "./img/capture.png" + ' />');
             break;
         case "3": // 文書
         case 3: