x.log

This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/Debian) (preloaded format=pdflatex 2018.9.23)  23 APR 2019 14:17
entering extended mode
 \write18 enabled.
 %&-line parsing enabled.
**spectrum.tex
(/usr/share/texlive/texmf-dist/tex/latex/tools/x.tex
LaTeX2e <2017/01/01> patch level 3
Babel <3.9r> and hyphenation patterns for 83 language(s) loaded.

! .
l.38   \batchmode \errmessage{}
                               \csname @@end\endcsname \end
This error message was generated by an \errmessage
command, so I can't give any explicit help.
Pretend that you're Hercule Poirot: Examine all clues,
and deduce the truth by order and method.

 ) 
Here is how much of TeX's memory you used:
 7 strings out of 493013
 254 string characters out of 6135682
 53248 words of memory out of 5000000
 3649 multiletter control sequences out of 15000+600000
 3640 words of font info for 14 fonts, out of 8000000 for 9000
 1141 hyphenation exceptions out of 8191
 5i,0n,1p,92b,8s stack positions out of 5000i,500n,10000p,200000b,80000s

No pages of output.
PDF statistics:
 0 PDF objects out of 1000 (max. 8388607)
 0 named destinations out of 1000 (max. 500000)
 1 words of extra memory for PDF output out of 10000 (max. 10000000)