Invoice OCR bug fix(digital parts)

I have developed the python script for invoice OCR. now It works well, but It makes some bugs for recognition the digital parts. For this, I'm finding the proper person who can fix this bugs ASAP. This is simple job, script is working now on the server.
budget $40
Your skilss:
- Python
- Pytesseract
I need to get high accuracy rather than fast and will release the milestone after test it.
Thank you. Olga