Solution: Updated frontend/src/components/ComprehensiveImportWizard.js:
- Increased timeout from 30s to 120s for large file uploads + R2 storage
- Added console error logging for debugging
Login Session Timeout Fix
1. frontend/src/utils/api.js
- Added BASENAME constant from environment variable
- Updated the 401 redirect to use ${BASENAME}/login?session=expired instead of just /login?session=expired
2. frontend/src/pages/Login.js
- Added basename constant from environment variable
- Updated URL cleanup to use ${basename}/login instead of just /login
