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I tested your skill and it said there are "Welcome back, there are 320 days until your birthday".I also did the tutorial up to step 4, but did not experience any issues: https://github.com/alexa/skill-sample-python-first-skill/tree/master/module-1#step-4-test-your-skill.
The forums is for general questions that can benefit the community, so if you have specific questions about your skill you can write to use here and mentioned that you were working with me: https://developer.amazon.com/alexa/console/contact-us.
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