Looks like you're not using the ISO key next to left shift so you could take D48 off and use that, you will have to scratch some of the coating off along the trace at the top where the pad has lifted.
The easier fix would be to get a 1n4148 diode as tactile said. You can solder it between the pad under the S62 label and the top of D63, with the bar on the diode facing away from the switch.