How to fix evap emission control system pressure sensor low code p0452 for a 2007 hyndia tucson?

Start with proper fault tracing.
The code if for Emission System Pressure Sensor Low Input - specifically the ruel tank pressure sensor.
Diagnostics are extensive. Who will be doing the work? Does that person have the tools and skills to follow strategy based diagnostics?

First thing I would do is replace gas cap and if you have a code reader clear codes then drive it