Razor pay checkout , not able to checkout

aceback (most recent call last):
File “apps/frappe/frappe/website/serve.py”, line 18, in get_response
response = renderer_instance.render()
File “apps/frappe/frappe/website/page_renderers/template_page.py”, line 78, in render
html = self.get_html()
File “apps/frappe/frappe/website/utils.py”, line 510, in cache_html_decorator
html = func(*args, **kwargs)
File “apps/frappe/frappe/website/page_renderers/template_page.py”, line 93, in get_html
self.post_process_context()
File “apps/frappe/frappe/website/page_renderers/template_page.py”, line 103, in post_process_context
super().post_process_context()
File “apps/frappe/frappe/website/page_renderers/base_template_page.py”, line 31, in post_process_context
self.set_title_with_prefix()
File “apps/frappe/frappe/website/page_renderers/base_template_page.py”, line 47, in set_title_with_prefix
and not self.context.title.startswith(self.context.title_prefix)
AttributeError: ‘list’ object has no attribute ‘startswith’