Update server.py to catch 400 error

[rockystone77]

This would stop the no header situation expectations to go upstream to ssl. So catch it here.

❓ What kind of change does this PR introduce?

• 🐞 bug fix
• 🐣 feature
• 📋 docs update
• 📋 tests/coverage improvement
• 📋 refactoring
• [ x] 💥 other

📋 What is the related issue number (starting with #)

Resolves #

❓ What is the current behavior? (You can also link to an open issue here)
The error is not caught and is handled.

❓ What is the new behavior (if this is a feature change)?
The error is handled and not taken upstream to raise an unhandled error.

📋 Other information:

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