17:51 ~/home (main)$ pip3.9 uninstall flask
Found existing installation: Flask 2.1.2
Uninstalling Flask-2.1.2:
  Would remove:
    /usr/local/lib/python3.9/site-packages/Flask-2.1.2.dist-info/*
    /usr/local/lib/python3.9/site-packages/flask/*
Proceed (Y/n)? Y
ERROR: Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/shutil.py", line 825, in move
    os.rename(src, real_dst)
OSError: [Errno 18] Invalid cross-device link: '/usr/local/lib/python3.9/site-packages/Flask-2.1.2.dist-info/' -> '/tmp/pip-uninstall-ifvjbyeb'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 167, in exc_logging_wrapper
    status = run_func(*args)
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/commands/uninstall.py", line 98, in run
    uninstall_pathset = req.uninstall(
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/req/req_install.py", line 658, in uninstall
    uninstalled_pathset.remove(auto_confirm, verbose)
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/req/req_uninstall.py", line 373, in remove
    moved.stash(path)
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/req/req_uninstall.py", line 271, in stash
    renames(path, new_path)
  File "/usr/local/lib/python3.9/site-packages/pip/_internal/utils/misc.py", line 311, in renames
    shutil.move(old, new)
  File "/usr/local/lib/python3.9/shutil.py", line 843, in move
    rmtree(src)
  File "/usr/local/lib/python3.9/shutil.py", line 734, in rmtree
    _rmtree_safe_fd(fd, path, onerror)
  File "/usr/local/lib/python3.9/shutil.py", line 690, in _rmtree_safe_fd
    onerror(os.unlink, fullname, sys.exc_info())
  File "/usr/local/lib/python3.9/shutil.py", line 688, in _rmtree_safe_fd
    os.unlink(entry.name, dir_fd=topfd)
PermissionError: [Errno 13] Permission denied: 'LICENSE.rst'