运行提示错误from markupsafe import soft_unicode

[Vincentlz]

λ xmind2testcase
Traceback (most recent call last):
File "C:\Programs\Python\Python38\lib\runpy.py", line 194, in run_module_as_main
return run_code(code, main_globals, None,
File "C:\Programs\Python\Python38\lib\runpy.py", line 87, in run_code
exec(code, run_globals)
File "C:\Programs\Python\Python38\Scripts\xmind2testcase.exe_main.py", line 4, in
File "C:\Programs\Python\Python38\lib\site-packages\xmind2testcase\cli.py", line 8, in
from webtool.application import launch
File "C:\Programs\Python\Python38\lib\site-packages\webtool\application.py", line 14, in
from flask import Flask, request, send_from_directory, g, render_template, abort, redirect, url_for
File "C:\Programs\Python\Python38\lib\site-packages\flask_init.py", line 14, in
from jinja2 import escape
File "C:\Programs\Python\Python38\lib\site-packages\jinja2_init.py", line 12, in
from .environment import Environment
File "C:\Programs\Python\Python38\lib\site-packages\jinja2\environment.py", line 25, in
from .defaults import BLOCK_END_STRING
File "C:\Programs\Python\Python38\lib\site-packages\jinja2\defaults.py", line 3, in
from .filters import FILTERS as DEFAULT_FILTERS # noqa: F401
File "C:\Programs\Python\Python38\lib\site-packages\jinja2\filters.py", line 13, in
from markupsafe import soft_unicode
ImportError: cannot import name 'soft_unicode' from 'markupsafe' (C:\Programs\Python\Python38\lib\site-packages\markupsafe_init_.py)

[Vincentlz]

有人遇到这个错误吗，怎么解决