command 'jupyter notebook' in dos window, there are some wrong hints!

when I perform the `jupyter notebook` comomand in the dos window, there are some wrong hints, how can I eliniminate the wrong messages?
the wrong messages are listed as follows:

```
[I 14:12:44.058 NotebookApp] [nb_conda_kernels] enabled, 8 kernels found
[Traceback (most recent call last):
File "C:\Program Files (x86)\Anaconda2\lib\logging\__init__.py", line 872, in emit
stream.write(ufs % msg)
IOError: [Errno 0] Error
Logged from file __init__.py, line 250
[I 14:14:30.459 NotebookApp] [nb_anacondacloud] enabled
[I 14:14:30.535 NotebookApp] [nb_conda] enabled
[I 14:14:31.461 NotebookApp] 鉁?nbpresent HTML export ENABLED
Traceback (most recent call last):
File "C:\Program Files (x86)\Anaconda2\lib\logging\__init__.py", line 884, in emit
stream.write(fs % msg.encode("UTF-8"))
IOError: [Errno 0] Error
Logged from file __init__.py, line 35
[I 14:14:31.463 NotebookApp] 鉁?nbpresent PDF export ENABLED
Traceback (most recent call last):
File "C:\Program Files (x86)\Anaconda2\lib\logging\__init__.py", line 884, in emit
stream.write(fs % msg.encode("UTF-8"))
IOError: [Errno 0] Error
Logged from file __init__.py, line 46
[I 14:14:32.121 NotebookApp] Serving notebooks from local directory: C:\06Codes_From_Jupyter
[I 14:14:32.121 NotebookApp] 0 active kernels
[I 14:14:32.121 NotebookApp] The Jupyter Notebook is running at:
[I 14:14:32.121 NotebookApp] http://localhost:8888/?token=4e8b0e7f9896f5de7136b6e00be2cfb4d4f02b9b4cb5ef2a
[I 14:14:32.122 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 14:14:32.132 NotebookApp]
```