I’m under contract to purchase a home in South Florida and had to have some electrical work completed to get a reasonable rate on our insurance policy. The electrician finished today, but left this large crack in the wall where the old wiring was.
Here are three photos: https://imgur.com/gallery/84wlPqZ
Is this concrete or stucco? Is it something I can repair myself by mixing up concrete or should I get a handyman to fix it? The current owner is a little upset, and I agree with him that it’s ugly, but based on the photos is this something that needs to be fixed urgently or can it wait five weeks until closing? Thank you in advance, I know very little about this stuff and would appreciate the help.