flutter: CacheManager: Failed to download file

[hahazheng]

TileLayerOptions(
urlTemplate: 'http://mt{s}.google.com/vt/lyrs=m&x={x}&y={y}&z={z}',
subdomains: ['0','1','2','3'],
tileProvider: CachedNetworkTileProvider(),
),

flutter: CacheManager: Failed to download file from http://mt3.google.com/vt/lyrs=m&x=32752&y=21795&z=16 with error:
SocketException: OS Error: Operation timed out, errno = 60, address = mt3.google.com, port = 52998