fn YY_clrmessingmaps =(    YY_messingmap = #()    allBitmaps = getClassInstances BitmapTexture  -- 所有材质for m=1 to allBitmaps.count do(    if not doesfileexist allBitmaps[m].filename do append YY_messingmap m    ) -- 收集丢失贴图    if YY_messingmap.count != 0 do        for c in YY_messingmap do        (            allBitmaps[c].filename = ""            );  -- 清除丢失贴图                YY_messingIES = #()    all_light = getClassInstances Target_Light + getClassInstances Free_Light  -- 所有灯光for l=1 to all_light.count do(    if not doesfileexist all_light[l].webFile do append YY_messingIES l    ) -- 收集丢失IES    if YY_messingIES.count != 0 do        for w in YY_messingIES do        (            all_light[w].webFile = ""            ) -- 清除丢失IES    )-- 清除丢失贴图与IES