问题描述：

重新启动后，命令 $ anaconda-navigator 将不再启动 Anaconda Navigator。

相反，会生成以下跟踪堆栈：

Traceback (most recent call last):
  File "/home/penguin/anaconda3/bin/anaconda-navigator", line 11, in <module>
    sys.exit(main())
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/app/main.py", line 99, in main
    from anaconda_navigator.utils.logs import clean_logs
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/utils/logs.py", line 18, in <module>
    from anaconda_navigator.config import (LOG_FILENAME, LOG_FOLDER,
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/config/__init__.py", line 27, in <module>
    from anaconda_navigator.config.main import CONF
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/config/main.py", line 67, in <module>
    raw_mode=True,
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/config/user.py", line 221, in __init__
    self.load_from_ini()
  File "/home/penguin/anaconda3/lib/python3.6/site-packages/anaconda_navigator/config/user.py", line 279, in load_from_ini
    self.read(self.filename(), encoding='utf-8')
  File "/home/penguin/anaconda3/lib/python3.6/configparser.py", line 697, in read
    self._read(fp, …