[Python] conda install packages error: Collecting package metadata (current_repodata.json):...

When I use 'conda install' to install packages, I always get an annoying error:

Collecting package metadata (current_repodata.json): failed

The detailed report can be seen through this link: error report

My machine info: win 10 (64 bit), Anaconda 2020.02 for Windows.

I tried to reinstall the previous version of anaconda, but it doesn't work. I would appreciate it if you could give me any suggestions.

C:\Users\ZY>conda install geopandas

Collecting package metadata (current_repodata.json): failed

>>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

Traceback (most recent call last):
File "D:\Anaconda3\lib\site-packages\conda\exceptions.py", line 1079, in __call__
return func(*args, **kwargs)
File "D:\Anaconda3\lib\site-packages\conda\cli\main.py", line 84, in _main
exit_code = do_call(args, p)
File "D:\Anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 82, in do_call
return getattr(module, func_name)(args, parser)
File "D:\Anaconda3\lib\site-packages\conda\cli\main_install.py", line 20, in execute
install(args, parser, 'install')
File "D:\Anaconda3\lib\site-packages\conda\cli\install.py", line 265, in install
should_retry_solve=(_should_retry_unfrozen or repodata_fn != repodata_fns[-1]),
File "D:\Anaconda3\lib\site-packages\conda\core\solve.py", line 117, in solve_for_transaction
should_retry_solve)
File "D:\Anaconda3\lib\site-packages\conda\core\solve.py", line 158, in solve_for_diff
force_remove, should_retry_solve)
File "D:\Anaconda3\lib\site-packages\conda\core\solve.py", line 262, in solve_final_state
ssc = self._collect_all_metadata(ssc)
File "D:\Anaconda3\lib\site-packages\conda\common\io.py", line 88, in decorated
return f(*args, **kwds)
File "D:\Anaconda3\lib\site-packages\conda\core\solve.py", line 415, in _collect_all_metadata
index, r = self._prepare(prepared_specs)
File "D:\Anaconda3\lib\site-packages\conda\core\solve.py", line 1011, in _prepare
self.subdirs, prepared_specs, self._repodata_fn)
File "D:\Anaconda3\lib\site-packages\conda\core\index.py", line 228, in get_reduced_index
repodata_fn=repodata_fn)
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 105, in query_all
result = tuple(concat(executor.map(subdir_query, channel_urls)))
File "D:\Anaconda3\lib\concurrent\futures\_base.py", line 598, in result_iterator
yield fs.pop().result()
File "D:\Anaconda3\lib\concurrent\futures\_base.py", line 435, in result
return self.__get_result()
File "D:\Anaconda3\lib\concurrent\futures\_base.py", line 384, in __get_result
raise self._exception
File "D:\Anaconda3\lib\concurrent\futures\thread.py", line 57, in run
result = self.fn(*self.args, **self.kwargs)
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 98, in <lambda>
package_ref_or_match_spec))
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 110, in query
self.load()
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 174, in load
_internal_state = self._load()
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 276, in _load
_internal_state = self._process_raw_repodata_str(raw_repodata_str)
File "D:\Anaconda3\lib\site-packages\conda\core\subdir_data.py", line 349, in _process_raw_repodata_str
json_obj = json.loads(raw_repodata_str or '{}')
File "D:\Anaconda3\lib\json\__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "D:\Anaconda3\lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "D:\Anaconda3\lib\json\decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 41 (char 40)

$ D:\Anaconda3\Scripts\conda-script.py install geopandas

environment variables:
CIO_TEST=<not set>
CONDA_ROOT=D:\Anaconda3
HOMEPATH=\Users\ZY
MOZ_PLUGIN_PATH=D:\Foxit Reader\plugins\
PATH=C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\Sys
tem32\WindowsPowerShell\v1.0\;C:\windows\System32\OpenSSH\;C:\Program
Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program
Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files
(x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\NVIDIA
Corporation\NVIDIA NvDLISR;C:\Program Files\Intel\WiFi\bin\;C:\Program
Files\Common Files\Intel\WirelessCommon\;C:\WINDOWS\system32;C:\WINDOW
S;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\
;C:\WINDOWS\System32\OpenSSH\;D:\Python\Python37;D:\Python\Python37\Li
b\site-packages;C:\Program Files (x86)\Microsoft SQL
Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL
Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL
Server\100\DTS\Binn\;D:\MATLAB\R2018a\bin;D:\SQL2019\Microsoft SQL
Server\x86\150\Tools\Binn\;D:\SQL2019\Microsoft SQL
Server\150\Tools\Binn\;D:\SQL2019\Microsoft SQL
Server\x86\150\DTS\Binn\;D:\SQL2019\Microsoft SQL
Server\150\DTS\Binn\;D:\SQL2019\Microsoft SQL Server\Client SDK\ODBC\1
70\Tools\Binn\;D:\Anaconda3\Scripts;C:\Users\ZY\AppData\Local\Microsof
t\WindowsApps;D:\Python\Python37;D:\Python\Python37\Scripts;C:\Users\Z
Y\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Anaconda3
(64-bit);D:\Python\Python37\Lib\site-packages;D:\Anaconda3\Lib\site-pa
ckages;D:\Anaconda3\Lib\;D:\Anaconda3\Library\bin;D:\Anaconda3\Scripts
;
PSMODULEPATH=C:\Program Files\WindowsPowerShell\Modules;C:\WINDOWS\system32\Windows
PowerShell\v1.0\Modules;D:\SQL2019\Microsoft SQL
Server\x86\150\Tools\PowerShell\Modules\
REQUESTS_CA_BUNDLE=<not set>
SSL_CERT_FILE=<not set>

active environment : None
user config file : C:\Users\ZY\.condarc
populated config files : C:\Users\ZY\.condarc
conda version : 4.8.2
conda-build version : 3.18.11
python version : 3.7.6.final.0
virtual packages : __cuda=10.2
base environment : D:\Anaconda3 (writable)
channel URLs : https://anaconda.org/win-64
https://anaconda.org/noarch
https://repo.anaconda.com/pkgs/main/win-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/win-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/msys2/win-64
https://repo.anaconda.com/pkgs/msys2/noarch
package cache : D:\Anaconda3\pkgs
C:\Users\ZY\.conda\pkgs
C:\Users\ZY\AppData\Local\conda\conda\pkgs
envs directories : D:\Anaconda3\envs
C:\Users\ZY\.conda\envs
C:\Users\ZY\AppData\Local\conda\conda\envs
platform : win-64
user-agent : conda/4.8.2 requests/2.22.0 CPython/3.7.6 Windows/10 Windows/10.0.17763
administrator : False
netrc file : None
offline mode : False

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