FTP Autenticanion failed

Hello

I tried to connect to ftp of my site and I faild, So I tried these:

first of all, I read about it here and aske many question in direct of @ josephgodwinke

My OS : Ubuntu 20.04

1- the server can’t be upgrade , this is the error:

/usr/local/requirments.txt                                     100%[=================================================================================================================================================>]   1.43K  --.-KB/s    in 0s

2023-12-24 17:07:54 (9.96 MB/s) - ‘/usr/local/requirments.txt’ saved [1461/1461]

Traceback (most recent call last):
  File "/usr/local/CyberPanel/bin/pip3", line 8, in <module>
    sys.exit(main())
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 68, in main
    command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/commands/__init__.py", line 114, in create_command
    module = importlib.import_module(module_path)
  File "/usr/local/CyberPanel/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 848, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/commands/install.py", line 16, in <module>
    from pip._internal.cli.req_command import (
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/cli/req_command.py", line 20, in <module>
    from pip._internal.index.collector import LinkCollector
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/index/collector.py", line 37, in <module>
    from pip._internal.network.session import PipSession
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/network/session.py", line 44, in <module>
    from pip._internal.network.cache import SafeFileCache
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_internal/network/cache.py", line 9, in <module>
    from pip._vendor.cachecontrol.caches import FileCache
  File "/usr/local/CyberPanel/lib/python3.8/site-packages/pip/_vendor/cachecontrol/caches/__init__.py", line 6, in <module>
    from .redis_cache import RedisCache
ModuleNotFoundError: No module named 'pip._vendor.cachecontrol.caches.redis_cache'
above command failed...

2- the ftp wont work at all, I just use the sftp and connected with root credentials

is there any way to fix the server problem or I must install the server in fresh os?