This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021/TeX Live for SUSE Linux) (preloaded format=pdflatex 2022.10.13)  28 MAR 2023 18:05
entering extended mode
 restricted \write18 enabled.
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**rig_interface_mk2.tex
(/usr/share/texmf/tex/latex/tools/q.tex
! Interruption.
<to be read again> 
                   \begingroup 
l.1 
    %%
? q
OK, entering \batchmode...
LaTeX2e <2020-10-01> patch level 4
 L3 programming layer <2021-02-18> File ignored
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<*> rig_interface_mk2.tex
                         
*** (job aborted, no legal \end found)

 
Here is how much of TeX's memory you used:
 18 strings out of 480031
 497 string characters out of 5884515
 280649 words of memory out of 5000000
 17437 multiletter control sequences out of 15000+600000
 403430 words of font info for 27 fonts, out of 8000000 for 9000
 475 hyphenation exceptions out of 8191
 13i,0n,15p,101b,10s stack positions out of 5000i,500n,10000p,200000b,80000s
!  ==> Fatal error occurred, no output PDF file produced!