about codalab error

[zhangxiaoxiao-tech]

When I follow the example to submit my zip of json to codalab, it gives me an error:

Traceback (most recent call last): File "/worker/worker.py", line 323, in run bundles = get_bundle(root_dir, 'run', bundle_url) File "/worker/worker.py", line 180, in get_bundle metadata[k] = get_bundle(bundle_path, k, v) File "/worker/worker.py", line 180, in get_bundle metadata[k] = get_bundle(bundle_path, k, v) File "/worker/worker.py", line 171, in get_bundle metadata = yaml.load(mf) File "/usr/local/lib/python2.7/dist-packages/yaml/init.py", line 69, in load loader = Loader(stream) File "/usr/local/lib/python2.7/dist-packages/yaml/loader.py", line 34, in init Reader.init(self, stream) File "/usr/local/lib/python2.7/dist-packages/yaml/reader.py", line 85, in init self.determine_encoding() File "/usr/local/lib/python2.7/dist-packages/yaml/reader.py", line 135, in determine_encoding self.update(1) File "/usr/local/lib/python2.7/dist-packages/yaml/reader.py", line 165, in update exc.encoding, exc.reason) ReaderError: 'utf8' codec can't decode byte #xaf: invalid start byte in "/tmp/codalab/tmpOjOaDx/run/input/res/metadata", position 11

How can I fix the error?