just get blank when I do markdown preview

[iysheng]

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name: Bug report
about: Create a report to help us improve
title: ''
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Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:
do :MarkdownPreview in vim

Expected behavior
when I want to do markdown preivew, I just get blank in firefox.

Screenshots

Desktop (please complete the following information):

• OS: fedora 40

Log: