Bug Description

Cannot sync with webdav

Steps to Reproduce

chatgpt-next-web version: v2.12.3
webdav address: https://dav.jianguoyun.com/dav
no proxy address
no data or folders in cloud storage

dev tools show:
request url: https://chat-gpt-next-web-6hy1.vercel.app/api/webdav/chatgpt-next-web/backup.json?endpoint=https://dav.jianguoyun.com/dav/
Get 502
Response: error code: 520

Expected Behavior

Sync correctly

Screenshots

No response

Deployment Method

• Docker
• Vercel
• Server

Desktop OS

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Desktop Browser

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Desktop Browser Version

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Smartphone Device

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Smartphone OS

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Smartphone Browser

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Smartphone Browser Version

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Additional Logs

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