YouCompleteMe runs python error

[frankiejun]

first I install vim with python 2.x support, then install YouCompleteMe and install Clang 3.4 in /home/xjf/.vim/bundle/YouCompleteMe/,
use ./install.sh --clang-completer.
all these are successful. but YouCompleteMe can't work. when use YcmCompleter GoToDeclaration command, it' shows error as following:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/youcompleteme.py", line 239, in OnBufferUnload
    { 'unloaded_buffer': deleted_buffer_file } )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/event_notification.py", line 71, in SendEventNotificationA
sync
    event.Start()
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/event_notification.py", line 41, in Start
    'event_notification' )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 77, in PostDataToHandlerAsync
    return BaseRequest._TalkToHandlerAsync( data, handler, 'POST', timeout )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 113, in _TalkToHandlerAsync
    return SendRequest( data, handler, method, timeout )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 92, in SendRequest
    data = json.dumps( data ),
  File "/usr/lib64/python2.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib64/python2.7/json/encoder.py", line 201, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib64/python2.7/json/encoder.py", line 264, in iterencode
    return _iterencode(o, 0)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xb2 in position 1524: invalid start byte

when exits vim, it always occurs error :

Error detected while processing function <SNR>61_OnBufferUnload:
line    5:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/youcompleteme.py", line 239, in OnBufferUnload
    { 'unloaded_buffer': deleted_buffer_file } )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/event_notification.py", line 71, in SendEventNotificationA
sync
    event.Start()
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/event_notification.py", line 41, in Start
    'event_notification' )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 77, in PostDataToHandlerAsync
    return BaseRequest._TalkToHandlerAsync( data, handler, 'POST', timeout )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 113, in _TalkToHandlerAsync
    return SendRequest( data, handler, method, timeout )
  File "/home/xjf/.vim/bundle/YouCompleteMe/autoload/../python/ycm/client/base_request.py", line 92, in SendRequest
    data = json.dumps( data ),
  File "/usr/lib64/python2.7/json/__init__.py", line 231, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib64/python2.7/json/encoder.py", line 201, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib64/python2.7/json/encoder.py", line 264, in iterencode
    return _iterencode(o, 0)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xb2 in position 1524: invalid start byte

my system is

Linux fedora16 3.6.10-2.fc16.x86_64 #1 SMP Tue Dec 11 18:55:03 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

vim7.4

both python2.7.3 and python3.3 in /usr/bin
[xjf@fedora16:/usr/bin/]ls -l python*
lrwxrwxrwx 1 root root       18  2月 14 18:38 python -> /usr/bin/python2.7
lrwxrwxrwx 1 root root        9  5月 27 2012 python2 -> python2.7
-rwxr-xr-x 1 root root     9496  4月 14 2012 python2.7
-rwxr-xr-x 1 root root     1785  4月 14 2012 python2.7-config
-rwxr-xr-x 1 root root 10156987 11月 18 18:03 python3.3
lrwxrwxrwx 1 root root       14  5月 27 2012 python-config -> python2-config

I don't know how to fix this issue.

[Valloric]

Looks like a Unicode encoding issue. Does your buffer contain any non-ASCII chars (shouldn't be a problem, but might...)? Does the filepath to file you are editing contain non-ASCII chars (again, shouldn't be a problem)?

Please try to provide a minimal test case that can repro this issue.

[Valloric]

Closing as duplicate of #821.

If you can produce a test case, please add it to that issue.