[issue]

[fpeanut]

Describe the bug
A clear and concise description of what the bug is.

Useful debug information from command line
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Remember to use "```" to surround the code block.

Screenshots
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Desktop (please complete the following information):

• OS: [e.g. Ubuntu 18.04]
• Version of SVL [e.g., 2021.03]

Additional context
在下载maps.zip时总是下载失败

[YuqiHuai]

Duplicate of #54