Anaconda updateでのエラー

conda update -all

で最後に

Preparing transaction: done
Verifying transaction: done
Executing transaction: | DEBUG menuinst_win32:__init__(196): Menu: name: 'Anaconda${PY_VER} ${PLATFORM}', prefix: 'C:\Users\%username%\Anaconda3', env_name: 'None', mode: 'user', used_mode: 'user'
DEBUG menuinst_win32:create(320): Shortcut cmd is C:\Users\%username%\Anaconda3\python.exe, args are ['C:\\Users\\%username%\\Anaconda3\\cwp.py', 'C:\\Users\\%username%\\Anaconda3', 'C:\\Users\\%username%\\Anaconda3\\python.exe', 'C:\\Users\\%username%\\Anaconda3\\Scripts\\jupyter-notebook-script.py', '%USERPROFILE%']
/ DEBUG menuinst_win32:__init__(196): Menu: name: 'Anaconda${PY_VER} ${PLATFORM}', prefix: 'C:\Users\%username%\Anaconda3', env_name: 'None', mode: 'user', used_mode: 'user'
DEBUG menuinst_win32:create(320): Shortcut cmd is C:\Users\%username%\Anaconda3\python.exe, args are ['C:\\Users\\%username%\\Anaconda3\\cwp.py', 'C:\\Users\\%username%\\Anaconda3', 'C:\\Users\\%username%\\Anaconda3\\python.exe', 'C:\\Users\\%username%\\Anaconda3\\Scripts\\jupyter-notebook-script.py', '%USERPROFILE%']
done

というエラーが出るのはなぜだろう