Try normal recovery mode first - hold cmd+r at startup. You appear to be using internet recovery (cmd+alt+r).
I think it is a networking error. If you have an suitable dongle please connect the Mac via ethernet & try again.
Another option is to create a bootable USB installer…
Create a bootable installer for macOS - Apple Support
Or use diskmakerx.com to create one.
If you cannot do any of those try moving to another wifi connection. The wifi that internet recovery uses has to meet certain criteria if I recall correctly.