I haven't the knowledge to suggest a solution. I see nothing there that points to wireless.
You might ask here: https://ubuntuforums.org/forumdisplay.php?f=331 There may be a solution but I am not a boot specialist, but a wireless and networking journeyman.
If it were me, I'd run a live USB session and try, if I could, to back up my essential files and reinstall the entire system.
Possibly useful: https://askubuntu.com/questions/1001...ing-to-a-shell
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