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Error Log - Backend Flow Testing

Summary

Attempting to test the full backend flow with a sample image (POST /cases/photo/embedding endpoint) to verify the lighter buffalo_s model works correctly.

Issues Encountered

1. Tailwind CSS Missing (Frontend)

  • Problem: Frontend showed plain white text with no styling
  • Root Cause: Tailwind CSS v4+ requires @tailwindcss/postcss package and @import "tailwindcss"; syntax instead of @tailwind base/components/utilities;
  • Fixed: Added @tailwindcss/postcss, postcss, autoprefixer packages and updated postcss.config.js and styles.css

2. Model Configuration (Backend)

  • Problem: Hardcoded buffalo_l model (heavy, ~330MB, slow on CPU)
  • Fixed: Added FACE_MODEL_NAME config setting (default buffalo_s) in backend/config.py, updated backend/face/detector.py to read from config, updated .env.example

3. Test Image Creation Issues

  • Problem: test_images/lenna.png not being created/found in working directory
  • Details: Multiple attempts to create test image using Python/PIL resulted in file not found errors
  • Working directory: d:\Projects\Project Ace
  • Commands tried: 
    # Multiple attempts to create test image
python -c "
import numpy as np
from PIL import Image
import os
img = np.zeros((200, 200, 3), dtype=np.uint8)
img[60:140, 60:140] = [180, 160, 140]
img[80:100, 80:120] = [50, 50, 50]
img[120:135, 80:120] = [100, 80, 60]
os.makedirs('test_images', exist_ok=True)
Image.fromarray(img).save('test_images/lenna.png')
print('Created:', os.path.abspath('test_images/lenna.png'))
"
  • Result: File creation appears to succeed but subsequent checks show Exists: False

4. Test Script Path Issues

  • Script: test_embedding.py uses os.path.join(os.path.dirname(__file__), 'test_images', 'lenna.png')
  • Error: FileNotFoundError: [Errno 2] No such file or directory: 'd:\\Projects\\Project Ace\\test_images\\lenna.png'
  • Note: The file system walk search shows no test_images directory exists in the workspace

5. Backend Server Running

  • Status: Backend runs successfully on port 8000
  • Health check: GET /health returns {"status":"ok"}
  • Model loading: First request to /cases/photo/embedding triggers model download (~160MB for buffalo_s)

Current State

  • Backend config updated to use buffalo_s (lighter model)
  • All tests pass (24/24)
  • Frontend builds successfully with Tailwind
  • Test image creation appears to fail silently
  • Cannot test embedding endpoint without valid test image

Next Steps

  1. Verify file system permissions for test_images directory creation
  2. Try creating test image with absolute path
  3. Or use an existing image from the filesystem
  4. Test the embedding endpoint once image is available