Remove extra ,

ui/src/album/AlbumList.js

@@ -77,7 +77,7 @@ const AlbumList = (props) => {
           <AlbumGridView {...props} />
         )}
       </List>
-      <AddToPlaylistDialog />,
+      <AddToPlaylistDialog />
     </>
   )
 }

ui/src/album/AlbumSongs.js

@@ -165,7 +165,7 @@ const AlbumSongs = (props) => {
           )}
         </Card>
       </div>
-      <AddToPlaylistDialog />,
+      <AddToPlaylistDialog />
     </>
   )
 }

ui/src/playlist/PlaylistSongs.js

@@ -129,7 +129,7 @@ const PlaylistSongs = (props) => {
           )}
         </Card>
       </div>
-      <AddToPlaylistDialog />,
+      <AddToPlaylistDialog />
     </>
   )
 }

ui/src/song/SongList.js

@@ -100,7 +100,7 @@ const SongList = (props) => {
           </SongDatagrid>
         )}
       </List>
-      <AddToPlaylistDialog />,
+      <AddToPlaylistDialog />
     </>
   )
 }