I am running into an issue when trying to convert a PDF to text where the ligatures 'fi' 'ff' 'fl' are being converted to an empty space. I have read through quite a few similar threads on the issue but have not found a solution that works.

Link to

Other FnR's should be simpler so ooring is highly probably flooring and under oor unlikely to be any thing other than underfloor

un�nished most likely unfinished (here its easier to see any remaining culprits)