Your bug report

#71775: 31.0.50; Symbol's function definition is void: file-name-sans-extension

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 71775@debbugs.gnu.org.

-- 
71775: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=71775
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems