fix

Could you please clarify what you mean by "fix" and what specifically needs correction?

fix the errors

Could you please clarify which errors you'd like to address? For example, are you referring to the Design Rule Check errors such as the "Overlapping Copper" error on trace 1b55 and the "Component Overrides" issues, or are there other errors you're targeting? Let me know so I can suggest the appropriate changes.

can you copy the stm32f746g discovery and the schematic here to the pcb design?

components to be added to the project

None.