This is pdfTeX, Version 3.141592653-2.6-1.40.23 (TeX Live 2021) (preloaded format=pdflatex 2021.9.30) 9 NOV 2021 16:55 entering extended mode \write18 enabled. %&-line parsing enabled. **main.tex (./main.tex LaTeX2e <2021-06-01> patch level 1 L3 programming layer <2021-07-12> (/usr/local/texlive/2021/texmf-dist/tex/latex /base/article.cls Document Class: article 2021/02/12 v1.4n Standard LaTeX document class (/usr/local/texlive/2021/texmf-dist/tex/latex/base/size10.clo File: size10.clo 2021/02/12 v1.4n Standard LaTeX file (size option) ) \c@part=\count182 \c@section=\count183 \c@subsection=\count184 \c@subsubsection=\count185 \c@paragraph=\count186 \c@subparagraph=\count187 \c@figure=\count188 \c@table=\count189 \abovecaptionskip=\skip47 \belowcaptionskip=\skip48 \bibindent=\dimen138 ) (/usr/local/texlive/2021/texmf-dist/tex/latex/base/inputenc.sty Package: inputenc 2021/02/14 v1.3d Input encoding file \inpenc@prehook=\toks16 \inpenc@posthook=\toks17 ) (/usr/local/texlive/2021/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def File: l3backend-pdftex.def 2021-07-12 L3 backend support: PDF output (pdfTeX) \l__color_backend_stack_int=\count190 \l__pdf_internal_box=\box50 ) (./output.aux (./acks/name.aux)) \openout1 = `output.aux'. LaTeX Font Info: Checking defaults for OML/cmm/m/it on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for OMS/cmsy/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for OT1/cmr/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for T1/cmr/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for TS1/cmr/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for OMX/cmex/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: Checking defaults for U/cmr/m/n on input line 8. LaTeX Font Info: ... okay on input line 8. LaTeX Font Info: External font `cmex10' loaded for size (Font) <12> on input line 10. LaTeX Font Info: External font `cmex10' loaded for size (Font) <8> on input line 10. LaTeX Font Info: External font `cmex10' loaded for size (Font) <6> on input line 10. [1 {/usr/local/texlive/2021/texmf-var/fonts/map/pdftex/updmap/pdftex.map}] \openout2 = `acks/name.aux'. (./acks/name.tex ! Misplaced alignment tab character &. l.1 inserting an ampersand & I can't figure out why you would want to use a tab mark here. If you just want an ampersand, the remedy is simple: Just type `I\&' now. But if some right brace up above has ended a previous alignment prematurely, you're probably due for more error messages, and you might try typing `S' now just to see what is salvageable. ) [2 ] ! Misplaced alignment tab character &. l.14 & I can't figure out why you would want to use a tab mark here. If you just want an ampersand, the remedy is simple: Just type `I\&' now. But if some right brace up above has ended a previous alignment prematurely, you're probably due for more error messages, and you might try typing `S' now just to see what is salvageable. (./output.aux (./acks/name.aux)) ) Here is how much of TeX's memory you used: 450 strings out of 478542 7915 string characters out of 5850413 299724 words of memory out of 5000000 18449 multiletter control sequences out of 15000+600000 407070 words of font info for 39 fonts, out of 8000000 for 9000 1141 hyphenation exceptions out of 8191 34i,6n,41p,150b,191s stack positions out of 5000i,500n,10000p,200000b,80000s Output written on output.pdf (2 pages, 42045 bytes). PDF statistics: 31 PDF objects out of 1000 (max. 8388607) 18 compressed objects within 1 object stream 0 named destinations out of 1000 (max. 500000) 1 words of extra memory for PDF output out of 10000 (max. 10000000)