Active job

Kitchen cabinet door fix

Can anyone fix this cabinet door under the sink please? We removed the original door and tried to put the sliding door but didn’t complete... Now I just want to replace the original door like the last photo (which is another cabinet door) and maybe just cover the other side with the board etc...Just want some basic fix wanted. Please send me a quote and tell me how you could do this (I’m open to any idea) and I’m looking to do this ASAP. Thanks