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

Traceback (most recent call last):
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/exceptions.py", line 1079, in __call__
    return func(*args, **kwargs)
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/cli/main.py", line 84, in _main
    exit_code = do_call(args, p)
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/cli/conda_argparse.py", line 83, in do_call
    return getattr(module, func_name)(args, parser)
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/cli/main_update.py", line 20, in execute
    install(args, parser, 'update')
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/cli/install.py", line 116, in install
    if context.use_only_tar_bz2:
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda/base/context.py", line 714, in use_only_tar_bz2
    import conda_package_handling.api
  File "/home/tutti/anaconda3/lib/python3.8/site-packages/conda_package_handling/api.py", line 7, in <module>
    import tqdm as _tqdm
ModuleNotFoundError: No module named 'tqdm'

$ /home/tutti/anaconda3/bin/conda update --all

environment variables:
CIO_TEST=
CONDA_DEFAULT_ENV=base
CONDA_EXE=/home/tutti/anaconda3/bin/conda
CONDA_PREFIX=/home/tutti/anaconda3
CONDA_PROMPT_MODIFIER=(base)
CONDA_PYTHON_EXE=/home/tutti/anaconda3/bin/python
CONDA_ROOT=/home/tutti/anaconda3
CONDA_SHLVL=1
CURL_CA_BUNDLE=
LD_LIBRARY_PATH=:/usr/local/cuda-10.0/lib64
PATH=/home/tutti/anaconda3/bin:/home/tutti/anaconda3/bin:/home/tutti/anacon
da3/condabin:/home/tutti/.local/bin:/usr/local/sbin:/usr/local/bin:/us
r/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/
local/scala/bin:~/anaconda3/bin:/home/tutti/.local/share/coursier/bin:
/usr/local/cuda-10.0/bin
PYTHONPATH=:/usr/lib/python3/dist-packages
REQUESTS_CA_BUNDLE=
SSL_CERT_FILE=
TERMINATOR_DBUS_PATH=/net/tenshu/Terminator2
WINDOWPATH=2

 active environment : base
active env location : /home/tutti/anaconda3
        shell level : 1
   user config file : /home/tutti/.condarc

populated config files :
conda version : 4.9.2
conda-build version : 3.20.5
python version : 3.8.5.final.0
virtual packages : __cuda=11.6=0
__glibc=2.31=0
__unix=0=0
__archspec=1=x86_64
base environment : /home/tutti/anaconda3 (writable)
channel URLs : https://repo.anaconda.com/pkgs/main/linux-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/linux-64
https://repo.anaconda.com/pkgs/r/noarch
package cache : /home/tutti/anaconda3/pkgs
/home/tutti/.conda/pkgs
envs directories : /home/tutti/anaconda3/envs
/home/tutti/.conda/envs
platform : linux-64
user-agent : conda/4.9.2 requests/2.22.0 CPython/3.8.5 Linux/5.15.0-56-generic ubuntu/20.04.5 glibc/2.31
UID:GID : 1000:1000
netrc file : None
offline mode : False

An unexpected error has occurred. Conda has prepared the above report.

If submitted, this report will be used by core maintainers to improve
future releases of conda.
Would you like conda to send this report to the core maintainers?

No report sent. To permanently opt-out, use

$ conda config --set report_errors false

解决办法是pip安装’tqdm’