[BUG] Handling URLs passed to `shell.openExternal(

[masood]

Describe the bug
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To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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Desktop (please complete the following information):

• OS: [e.g. Linux]
• Build [e.g. AppImage, Snap]
• Version [e.g. 0.0.2]

Additional context
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