This is pdfTeX, Version 3.14159265-2.6-1.40.16 (TeX Live 2015/Debian) (preloaded format=pdflatex 2018.10.12) 5 NOV 2018 13:37 entering extended mode restricted \write18 enabled. %&-line parsing enabled. **2018Laboration1.tex (./2018Laboration1.tex LaTeX2e <2016/02/01> Babel <3.9q> and hyphenation patterns for 81 language(s) loaded. 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(Default extension: sty) Enter file name: evince 2018Laboration1.pdf & ! LaTeX Error: Missing \begin{document}. See the LaTeX manual or LaTeX Companion for explanation. Type H for immediate help. ... l.11 ? q OK, entering \batchmode... ! Misplaced alignment tab character &. evince 2018Laboration1.pdf & l.11 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. ! LaTeX Error: File `evince 2018Laboration1.pdf &' not found. Type X to quit or to proceed, or enter new name. (Default extension: pdf &) Enter file name: ! Emergency stop. l.11 ^^M *** (cannot \read from terminal in nonstop modes) Here is how much of TeX's memory you used: 2584 strings out of 493029 30735 string characters out of 6136233 94613 words of memory out of 5000000 6123 multiletter control sequences out of 15000+600000 4709 words of font info for 16 fonts, out of 8000000 for 9000 1141 hyphenation exceptions out of 8191 27i,0n,43p,248b,37s stack positions out of 5000i,500n,10000p,200000b,80000s ! ==> Fatal error occurred, no output PDF file produced!