This is pdfTeX, Version 3.14159265-2.6-1.40.20 (MiKTeX 2.9.6960 64-bit) (preloaded format=pdflatex 2019.3.5)  2 MAR 2021 19:11
entering extended mode
**quit()
("C:\Program Files\MiKTeX 2.9\tex/latex/tools\.tex"
! Interruption.
<to be read again> 
                   \begingroup 
l.1 
    %%
? 
LaTeX2e <2018-12-01>
File ignored)
*q

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
<*> q
     
? q
OK, entering \batchmode...
Missing character: There is no q in font nullfont!
! Emergency stop.
<*> q
     
*** (job aborted, no legal \end found)

 
Here is how much of TeX's memory you used:
 7 strings out of 492946
 194 string characters out of 3135528
 57009 words of memory out of 3000000
 4004 multiletter control sequences out of 15000+200000
 3640 words of font info for 14 fonts, out of 3000000 for 9000
 1141 hyphenation exceptions out of 8191
 5i,0n,4p,87b,14s stack positions out of 5000i,500n,10000p,200000b,50000s
!  ==> Fatal error occurred, no output PDF file produced!
