Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MM1/CDfNH1783.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Form_41012.log 804 Log file, useful mostly for debugging
Tune-41012-CDfNH1783.abc 145 ABC music file with the extracted tune(s)
Tune-41012-CDfNH1783.txt 145 Plain-text file with the extracted tune(s)
Tune-41012-get.log 3129 Log file, useful mostly for debugging
These files should be available for 24 hours.