AttributeError: module 'zstandard' has no attribute '__version__'

[TechLabLgm]

Hi, I did the conda update this morning, with the command conda update conda, but at the end I got this message:

Traceback (most recent call last): File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1124, in call return func(*args, **kwargs) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/cli/main.py", line 57, in main_subshell p = generate_parser() File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/cli/conda_argparse.py", line 40, in generate_parser p = ArgumentParser( File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/cli/conda_argparse.py", line 117, in init self._subcommands = context.plugin_manager.get_hook_results("subcommands") File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/base/context.py", line 422, in plugin_manager from ..plugins.manager import get_plugin_manager File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/plugins/init.py", line 3, in from .hookspec import hookimpl # noqa: F401 File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/plugins/hookspec.py", line 10, in from .types import CondaSolver, CondaSubcommand, CondaVirtualPackage File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/plugins/types.py", line 6, in from ..core.solve import Solver File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/solve.py", line 15, in from .index import get_reduced_index, _supplement_index_with_system File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/index.py", line 10, in from .package_cache_data import PackageCacheData File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/package_cache_data.py", line 22, in from .path_actions import CacheUrlAction, ExtractPackageAction File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/path_actions.py", line 28, in from ..gateways.connection.download import download File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/gateways/connection/init.py", line 6, in from requests import ConnectionError, HTTPError, Session File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/requests/init.py", line 43, in import urllib3 File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/init.py", line 18, in from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/connectionpool.py", line 15, in from ._request_methods import RequestMethods File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/_request_methods.py", line 10, in from .response import BaseHTTPResponse File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/response.py", line 38, in map(int, re.search(r"^([0-9]+).([0-9]+)", zstd.version).groups()) # type: ignore[union-attr] AttributeError: module 'zstandard' has no attribute 'version'

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/home/bioinfo/mambaforge-pypy3/bin/conda", line 13, in sys.exit(main()) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/cli/main.py", line 112, in main return conda_exception_handler(main, *args, *kwargs) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1424, in conda_exception_handler return_value = exception_handler(func, args, **kwargs) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1127, in call return self.handle_exception(exc_val, exc_tb) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1167, in handle_exception return self.handle_unexpected_exception(exc_val, exc_tb) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1178, in handle_unexpected_exception self.print_unexpected_error_report(error_report) File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/exceptions.py", line 1240, in print_unexpected_error_report from .cli.main_info import get_env_vars_str, get_main_info_str File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/cli/main_info.py", line 17, in from ..core.index import _supplement_index_with_system File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/index.py", line 10, in from .package_cache_data import PackageCacheData File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/package_cache_data.py", line 22, in from .path_actions import CacheUrlAction, ExtractPackageAction File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/core/path_actions.py", line 28, in from ..gateways.connection.download import download File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/conda/gateways/connection/init.py", line 6, in from requests import ConnectionError, HTTPError, Session File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/requests/init.py", line 43, in import urllib3 File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/init.py", line 18, in from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/connectionpool.py", line 15, in from ._request_methods import RequestMethods File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/_request_methods.py", line 10, in from .response import BaseHTTPResponse File "/home/bioinfo/mambaforge-pypy3/lib/pypy3.9/site-packages/urllib3/response.py", line 38, in map(int, re.search(r"^([0-9]+).([0-9]+)", zstd.version).groups()) # type: ignore[union-attr] AttributeError: module 'zstandard' has no attribute 'version'

now if I try to create a virtual environment or install something with conda I get the same message

My OS is UBUNTU 20.04 LTS

How can fix the problem?

Thanks