Report generation error after upgraded to latest version

[ky0112]

Hello, I encountered an error after upgrading to the latest version of petereport. The following is the error:

Traceback:
Environment:

Request Method: GET
Request URL: http://xx.xx.xx.xx:8000/en/report/download/html/default/122

Django Version: 4.2.9
Python Version: 3.8.10
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'martor',
'django_bleach',
'preport']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']

Traceback (most recent call last):
File "/home/reporttool/.local/share/virtualenvs/petereport-_1hU1HQ3/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)
File "/home/reporttool/.local/share/virtualenvs/petereport-_1hU1HQ3/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/reporttool/.local/share/virtualenvs/petereport-_1hU1HQ3/lib/python3.8/site-packages/django/contrib/auth/decorators.py", line 23, in _wrapper_view
return view_func(request, *args, **kwargs)
File "/opt/petereport/app/preport/views.py", line 892, in reportdownloadhtml
if template_html_dir_pp.is_relative_to(template_dir):

Exception Type: AttributeError at /en/report/download/html/default/122
Exception Value: 'PurePosixPath' object has no attribute 'is_relative_to'