Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Graded1/CDfNH1783.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Coll_10551.log 122415 Log file, useful mostly for debugging
Tune-10551-CDfNH1783.abc 149 ABC music file with the extracted tune(s)
Tune-10551-CDfNH1783.txt 149 Plain-text file with the extracted tune(s)
Tune-10551-get.log 6456 Log file, useful mostly for debugging
These files should be available for 24 hours.