can't find any data downloaded

[z362194037]

I have been running the code, the output is followed as below

Manager has started...
2017-08-18 23:48:05.840808: Start street loading.
2017-08-18 23:48:10.358580: 84 streets to walk.
2017-08-18 23:48:10.358615: Stop street loading.
2017-08-18 23:48:10.497095: Start image loading.
2017-08-18 23:50:38.055783: Stop image loading.
2017-08-18 23:50:38.055847: Start detection.
2017-08-18 23:50:38.141683: 1339 images to analyze.
2017-08-18 23:50:38.643889: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to use SSE4.1 instructions, but these are available on your machine and could speed up CPU computations.
2017-08-18 23:50:38.643943: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to use SSE4.2 instructions, but these are available on your machine and could speed up CPU computations.
2017-08-18 23:50:38.643950: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to use AVX instructions, but these are available on your machine and could speed up CPU computations.
2017-08-18 23:50:38.643956: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to use AVX2 instructions, but these are available on your machine and could speed up CPU computations.
2017-08-18 23:50:38.643979: W tensorflow/core/platform/cpu_feature_guard.cc:45] The TensorFlow library wasn't compiled to use FMA instructions, but these are available on your machine and could speed up CPU computations.
2017-08-18 23:50:38.749080: I tensorflow/stream_executor/cuda/cuda_gpu_executor.cc:893] successful NUMA node read from SysFS had negative value (-1), but there must be at least one NUMA node, so returning NUMA node zero
2017-08-18 23:50:38.749375: I tensorflow/core/common_runtime/gpu/gpu_device.cc:940] Found device 0 with properties: 

2017-08-18 23:50:38.749412: I tensorflow/core/common_runtime/gpu/gpu_device.cc:961] DMA: 0 
2017-08-18 23:50:38.749418: I tensorflow/core/common_runtime/gpu/gpu_device.cc:971] 0:   Y 
2017-08-18 23:50:38.749439: I tensorflow/core/common_runtime/gpu/gpu_device.cc:1030] Creating TensorFlow device (/gpu:0) -> (device: 0, name: GeForce GTX 980, pci bus id: 0000:01:00.0)
2017-08-18 23:50:39.441635: W tensorflow/core/framework/op_def_util.cc:332] Op BatchNormWithGlobalNormalization is deprecated. It will cease to work in GraphDef version 9. Use tf.nn.batch_normalization().
2017-08-18 23:51:13.550278: Stop detection.
Compare with OpenStreetMap entries: False
10 potential nodes detected so far
Manager has finished!

at the end, I didn't find any data downloaded, how it is processed ?

Sometimes I run and get this

Tile download failed 0 wait 0  HTTPSConnectionPool(host='t0.ssl.ak.tiles.virtualearth.net', port=443): Max retries exceeded with url: /tiles/a1202211232320113121.jpeg?g=4401&n=z (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f63dc770e48>: Failed to establish a new connection: [Errno -2] Name or service not known',))
...
Tile download failed 3 wait 30  HTTPSConnectionPool(host='t3.ssl.ak.tiles.virtualearth.net', port=443): Max retries exceeded with url: /tiles/a1202211232320113020.jpeg?g=4401&n=z (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f63dc6831d0>: Failed to establish a new connection: [Errno -2] Name or service not known',))

Manager has finished!
Traceback (most recent call last):
  File "main.py", line 138, in <module>
    main_func()
  File "main.py", line 134, in main_func
    args.func(args, configuration)
  File "main.py", line 21, in manager
    manage.run()
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/role/manager.py", line 26, in run
    worker_functions.standalone(bboxes=self.small_bboxes, configuration=self.configuration)
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/role/worker_functions.py", line 59, in standalone
    nodes += get_nodes(bbox, configuration)
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/role/worker_functions.py", line 26, in get_nodes
    walker.load_tiles()
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/detection/box_walker.py", line 53, in load_tiles
    loader.load_tile()
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/data/orthofoto/tile_loader.py", line 11, in load_tile
    image = self.image_api.get_image(self.bbox)
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/data/orthofoto/other/other_api.py", line 18, in get_image
    images = self._download_images(t_minx, t_miny, t_maxx, t_maxy)
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/data/orthofoto/other/other_api.py", line 43, in _download_images
    loader.download()
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/data/orthofoto/other/multi_loader.py", line 32, in download
    result = self._try_download(url_part)
  File "/usr/local/lib/python3.4/dist-packages/OSM_Crosswalk_Detection-0.1.6_164.ge4643e7.dirty-py3.4.egg/src/data/orthofoto/other/multi_loader.py", line 47, in _try_download
    raise Exception(error_message)
Exception: Download of tiles have failed 4 times