🔧 Debug Information
🌐 API URL: https://krotronwork.com/refund_requst/slip_input.php
⚠️ Common Issues:
- CORS policy - Server needs to set proper headers
- upload_failed - File upload permission or size issues
- Server returning HTML instead of JSON (check PHP errors)
- File permissions - slip_input/ folder needs write permissions (chmod 755 or 777)
- PHP limits - check upload_max_filesize, post_max_size, max_execution_time
💡 Quick Test: Try submitting form WITHOUT selecting any image file first