epscmd="jcabc2ps /u/guests/jc/w/tmp/Tune-53758-2018xmas.abc -F fmt/pdf_65.fmt +E/u/guests/jc/w/tmp/Tune-53758-2018xmas-.eps 2>>/u/guests/jc/w/tmp/Tune-53758-get.log" returned status 11.

Error exit status 11; here are some files to check:
[get.cgi V=1/1 B=1 scale=0.65 512x512 ]
filesizedescription
Tune-53758-2018xmas-001.eps 34924 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-53758-2018xmas-002.eps 33955 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-53758-2018xmas-003.eps 33882 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-53758-2018xmas-004.eps 33930 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-53758-2018xmas-005.eps 33912 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-53758-2018xmas.abc 14260 ABC music file with the extracted tune(s)
Tune-53758-2018xmas.txt 14260 Plain-text file with the extracted tune(s)
Tune-53758-get.log 17390 Log file, useful mostly for debugging
These files should be available for 24 hours.