Application template returns "Not Found" error on HarperDB 4.6.7 (worked on 4.5.8)

## Bug Report

### Description
When following the documentation to clone and run the application template, the application returns "Not Found" instead of working normally. This appears to be a version compatibility issue.

### Environment
- **HarperDB Version:** 4.6.7 (current)
- **Previously Working Version:** 4.5.8
- **URL Accessed:** http://localhost:9926/Greeting
- **Error:** "Not Found" displayed in browser

### Steps to Reproduce
1. Clone the application-template repository
2. Follow the setup instructions from the documentation
3. Start HarperDB 4.6.7
4. Navigate to http://localhost:9926/Greeting
5. Observe "Not Found" error instead of expected greeting

### Expected Behavior
The application should display the greeting page as it did with HarperDB 4.5.8

### Actual Behavior
Browser shows "Not Found" error

### Additional Context
- The same application template worked correctly with HarperDB 4.5.8
- This suggests a breaking change or compatibility issue introduced in version 4.6.7
- The HarperDB server appears to be running correctly (visible in terminal output)

### Request
Please investigate the compatibility issue between the application template and HarperDB 4.6.7, and either:
1. Update the template to work with 4.6.7, or
2. Document the version compatibility requirements

Thank you!