* fix: resolve JSON parsing error in Stripe subscription endpoint
- Fix 'Unexpected end of JSON input' error during premium username upgrade
- Replace res.status(404).end() with proper JSON response
- Add descriptive error message for missing userId or intentUsername parameters
- Ensure consistent JSON response format across all error paths
Co-Authored-By: anik@cal.com <adhabal2002@gmail.com>
* fix: add proper session handling to Stripe subscription endpoint
- Import getServerSession from @calcom/features/auth/lib/getServerSession
- Use getServerSession({ req }) to properly populate user session
- Fix session validation that was causing 'Unexpected end of JSON input' error
- Ensure subscription endpoint handles sessions consistently with other Cal.com API endpoints
Co-Authored-By: anik@cal.com <adhabal2002@gmail.com>
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Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
