Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1800/BB50.abc"

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 ]
filesizedescription
Coll_63487.log 146094 Log file, useful mostly for debugging
Find_63483.log 1784 Log file, useful mostly for debugging
Tune-6348-BB50.abc 141 ABC music file with the extracted tune(s)
Tune-6348-BB50.txt 141 Plain-text file with the extracted tune(s)
Tune-6348-get.log 3039 Log file, useful mostly for debugging
Tune-63480-get.log 1299 Log file, useful mostly for debugging
Tune-63484-get.log 1350 Log file, useful mostly for debugging
Tune-63487-get.log 2838 Log file, useful mostly for debugging
These files should be available for 24 hours.