Anaconda3 cannot open navigator solution

python The configuration environment is really terrible . Recently installed anaconda3,pycharm after , Change source , After upgrading various templates , All of a sudden anaconda Unable to open navigator The situation of . Try reinstalling 、 Uninstall the installation , Delete the registry all about python and anaconda Related items , Full search including anaconda And delete , None of them can solve the problem , Are prompted in the form of web pages ：

Traceback (most recent call last):
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\exceptions.py", line 75, in exception_handler
    return_value = func(*args, **kwargs)
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\app\start.py", line 150, in start_app
    window = run_app(splash)
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\app\start.py", line 65, in run_app
    window = MainWindow(splash=splash, tab_project=False)
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\widgets\main_window.py", line 168, in __init__
    self.api = AnacondaAPI()
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\api\anaconda_api.py", line 2294, in AnacondaAPI
    ANACONDA_API = _AnacondaAPI()
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\api\anaconda_api.py", line 91, in __init__
    self._conda_api = CondaAPI()
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\api\conda_api.py", line 1767, in CondaAPI
    CONDA_API = _CondaAPI()
  File "d:\Anaconda3\lib\site-packages\anaconda_navigator\api\conda_api.py", line 353, in __init__
    self.sys_rc_path = join(self.ROOT_PREFIX, '.condarc')
  File "d:\Anaconda3\lib\ntpath.py", line 76, in join
    path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not NoneType

  Continue to trace back the files that have been moved during your installation , In the user directory pip.ini and .condarc. An accidental attempt to .condarc Delete and then open the file navigator incredibly OK 了 ...